81821040

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{431}}^1$

素因数の和:567

約数の個数: 160

約数和(自身を含む): 293124096

約数和(自身を除く): 211303056

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 113, 120, 140, 168, 210, 226, 240, 280, 336, 339, 420, 431, 452, 560, 565, 678, 791, 840, 862, 904, 1130, 1293, 1356, 1582, 1680, 1695, 1724, 1808, 2155, 2260, 2373, 2586, 2712, 3017, 3164, 3390, 3448, 3955, 4310, 4520, 4746, 5172, 5424, 6034, 6328, 6465, 6780, 6896, 7910, 8620, 9040, 9051, 9492, 10344, 11865, 12068, 12656, 12930, 13560, 15085, 15820, 17240, 18102, 18984, 20688, 23730, 24136, 25860, 27120, 30170, 31640, 34480, 36204, 37968, 45255, 47460, 48272, 48703, 51720, 60340, 63280, 72408, 90510, 94920, 97406, 103440, 120680, 144816, 146109, 181020, 189840, 194812, 241360, 243515, 292218, 340921, 362040, 389624, 487030, 584436, 681842, 724080, 730545, 779248, 974060, 1022763, 1168872, 1363684, 1461090, 1704605, 1948120, 2045526, 2337744, 2727368, 2922180, 3409210, 3896240, 4091052, 5113815, 5454736, 5844360, 6818420, 8182104, 10227630, 11688720, 13636840, 16364208, 20455260, 27273680, 40910520, 81821040]

約数ペア:

[(1, 81821040), (2, 40910520), (3, 27273680), (4, 20455260), (5, 16364208), (6, 13636840), (7, 11688720), (8, 10227630), (10, 8182104), (12, 6818420), (14, 5844360), (15, 5454736), (16, 5113815), (20, 4091052), (21, 3896240), (24, 3409210), (28, 2922180), (30, 2727368), (35, 2337744), (40, 2045526), (42, 1948120), (48, 1704605), (56, 1461090), (60, 1363684), (70, 1168872), (80, 1022763), (84, 974060), (105, 779248), (112, 730545), (113, 724080), (120, 681842), (140, 584436), (168, 487030), (210, 389624), (226, 362040), (240, 340921), (280, 292218), (336, 243515), (339, 241360), (420, 194812), (431, 189840), (452, 181020), (560, 146109), (565, 144816), (678, 120680), (791, 103440), (840, 97406), (862, 94920), (904, 90510), (1130, 72408), (1293, 63280), (1356, 60340), (1582, 51720), (1680, 48703), (1695, 48272), (1724, 47460), (1808, 45255), (2155, 37968), (2260, 36204), (2373, 34480), (2586, 31640), (2712, 30170), (3017, 27120), (3164, 25860), (3390, 24136), (3448, 23730), (3955, 20688), (4310, 18984), (4520, 18102), (4746, 17240), (5172, 15820), (5424, 15085), (6034, 13560), (6328, 12930), (6465, 12656), (6780, 12068), (6896, 11865), (7910, 10344), (8620, 9492), (9040, 9051)]