661506560

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1$

素因数の和:199

約数の個数: 240

約数和(自身を含む): 1887066720

約数和(自身を除く): 1225560160

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 128, 130, 139, 143, 160, 169, 176, 208, 220, 256, 260, 278, 286, 320, 338, 352, 416, 440, 512, 520, 556, 572, 640, 676, 695, 704, 715, 832, 845, 880, 1040, 1112, 1144, 1280, 1352, 1390, 1408, 1430, 1529, 1664, 1690, 1760, 1807, 1859, 2080, 2224, 2288, 2560, 2704, 2780, 2816, 2860, 3058, 3328, 3380, 3520, 3614, 3718, 4160, 4448, 4576, 5408, 5560, 5632, 5720, 6116, 6656, 6760, 7040, 7228, 7436, 7645, 8320, 8896, 9035, 9152, 9295, 10816, 11120, 11440, 12232, 13520, 14080, 14456, 14872, 15290, 16640, 17792, 18070, 18304, 18590, 19877, 21632, 22240, 22880, 23491, 24464, 27040, 28160, 28912, 29744, 30580, 33280, 35584, 36140, 36608, 37180, 39754, 43264, 44480, 45760, 46982, 48928, 54080, 57824, 59488, 61160, 71168, 72280, 73216, 74360, 79508, 86528, 88960, 91520, 93964, 97856, 99385, 108160, 115648, 117455, 118976, 122320, 144560, 148720, 159016, 177920, 183040, 187928, 195712, 198770, 216320, 231296, 234910, 237952, 244640, 258401, 289120, 297440, 318032, 355840, 366080, 375856, 391424, 397540, 432640, 462592, 469820, 475904, 489280, 516802, 578240, 594880, 636064, 751712, 782848, 795080, 925184, 939640, 951808, 978560, 1033604, 1156480, 1189760, 1272128, 1292005, 1503424, 1590160, 1879280, 1957120, 2067208, 2312960, 2379520, 2544256, 2584010, 3006848, 3180320, 3758560, 3914240, 4134416, 4625920, 4759040, 5088512, 5168020, 6013696, 6360640, 7517120, 8268832, 10177024, 10336040, 12027392, 12721280, 15034240, 16537664, 20672080, 25442560, 30068480, 33075328, 41344160, 50885120, 60136960, 66150656, 82688320, 132301312, 165376640, 330753280, 661506560]

約数ペア:

[(1, 661506560), (2, 330753280), (4, 165376640), (5, 132301312), (8, 82688320), (10, 66150656), (11, 60136960), (13, 50885120), (16, 41344160), (20, 33075328), (22, 30068480), (26, 25442560), (32, 20672080), (40, 16537664), (44, 15034240), (52, 12721280), (55, 12027392), (64, 10336040), (65, 10177024), (80, 8268832), (88, 7517120), (104, 6360640), (110, 6013696), (128, 5168020), (130, 5088512), (139, 4759040), (143, 4625920), (160, 4134416), (169, 3914240), (176, 3758560), (208, 3180320), (220, 3006848), (256, 2584010), (260, 2544256), (278, 2379520), (286, 2312960), (320, 2067208), (338, 1957120), (352, 1879280), (416, 1590160), (440, 1503424), (512, 1292005), (520, 1272128), (556, 1189760), (572, 1156480), (640, 1033604), (676, 978560), (695, 951808), (704, 939640), (715, 925184), (832, 795080), (845, 782848), (880, 751712), (1040, 636064), (1112, 594880), (1144, 578240), (1280, 516802), (1352, 489280), (1390, 475904), (1408, 469820), (1430, 462592), (1529, 432640), (1664, 397540), (1690, 391424), (1760, 375856), (1807, 366080), (1859, 355840), (2080, 318032), (2224, 297440), (2288, 289120), (2560, 258401), (2704, 244640), (2780, 237952), (2816, 234910), (2860, 231296), (3058, 216320), (3328, 198770), (3380, 195712), (3520, 187928), (3614, 183040), (3718, 177920), (4160, 159016), (4448, 148720), (4576, 144560), (5408, 122320), (5560, 118976), (5632, 117455), (5720, 115648), (6116, 108160), (6656, 99385), (6760, 97856), (7040, 93964), (7228, 91520), (7436, 88960), (7645, 86528), (8320, 79508), (8896, 74360), (9035, 73216), (9152, 72280), (9295, 71168), (10816, 61160), (11120, 59488), (11440, 57824), (12232, 54080), (13520, 48928), (14080, 46982), (14456, 45760), (14872, 44480), (15290, 43264), (16640, 39754), (17792, 37180), (18070, 36608), (18304, 36140), (18590, 35584), (19877, 33280), (21632, 30580), (22240, 29744), (22880, 28912), (23491, 28160), (24464, 27040)]