78640640

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:192

約数の個数: 160

約数和(自身を含む): 216548640

約数和(自身を除く): 137908000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 139, 160, 170, 208, 221, 256, 260, 272, 278, 320, 340, 416, 442, 512, 520, 544, 556, 640, 680, 695, 832, 884, 1040, 1088, 1105, 1112, 1280, 1360, 1390, 1664, 1768, 1807, 2080, 2176, 2210, 2224, 2363, 2560, 2720, 2780, 3328, 3536, 3614, 4160, 4352, 4420, 4448, 4726, 5440, 5560, 6656, 7072, 7228, 8320, 8704, 8840, 8896, 9035, 9452, 10880, 11120, 11815, 14144, 14456, 16640, 17680, 17792, 18070, 18904, 21760, 22240, 23630, 28288, 28912, 30719, 33280, 35360, 35584, 36140, 37808, 43520, 44480, 47260, 56576, 57824, 61438, 70720, 71168, 72280, 75616, 88960, 94520, 113152, 115648, 122876, 141440, 144560, 151232, 153595, 177920, 189040, 231296, 245752, 282880, 289120, 302464, 307190, 355840, 378080, 462592, 491504, 565760, 578240, 604928, 614380, 756160, 925184, 983008, 1156480, 1209856, 1228760, 1512320, 1966016, 2312960, 2457520, 3024640, 3932032, 4625920, 4915040, 6049280, 7864064, 9830080, 15728128, 19660160, 39320320, 78640640]

約数ペア:

[(1, 78640640), (2, 39320320), (4, 19660160), (5, 15728128), (8, 9830080), (10, 7864064), (13, 6049280), (16, 4915040), (17, 4625920), (20, 3932032), (26, 3024640), (32, 2457520), (34, 2312960), (40, 1966016), (52, 1512320), (64, 1228760), (65, 1209856), (68, 1156480), (80, 983008), (85, 925184), (104, 756160), (128, 614380), (130, 604928), (136, 578240), (139, 565760), (160, 491504), (170, 462592), (208, 378080), (221, 355840), (256, 307190), (260, 302464), (272, 289120), (278, 282880), (320, 245752), (340, 231296), (416, 189040), (442, 177920), (512, 153595), (520, 151232), (544, 144560), (556, 141440), (640, 122876), (680, 115648), (695, 113152), (832, 94520), (884, 88960), (1040, 75616), (1088, 72280), (1105, 71168), (1112, 70720), (1280, 61438), (1360, 57824), (1390, 56576), (1664, 47260), (1768, 44480), (1807, 43520), (2080, 37808), (2176, 36140), (2210, 35584), (2224, 35360), (2363, 33280), (2560, 30719), (2720, 28912), (2780, 28288), (3328, 23630), (3536, 22240), (3614, 21760), (4160, 18904), (4352, 18070), (4420, 17792), (4448, 17680), (4726, 16640), (5440, 14456), (5560, 14144), (6656, 11815), (7072, 11120), (7228, 10880), (8320, 9452), (8704, 9035), (8840, 8896)]