12717640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1$

素因数の和:722

約数の個数: 64

約数和(自身を含む): 31696560

約数和(自身を除く): 18978920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 661, 740, 962, 1322, 1480, 1924, 2405, 2644, 3305, 3848, 4810, 5288, 6610, 8593, 9620, 13220, 17186, 19240, 24457, 26440, 34372, 42965, 48914, 68744, 85930, 97828, 122285, 171860, 195656, 244570, 317941, 343720, 489140, 635882, 978280, 1271764, 1589705, 2543528, 3179410, 6358820, 12717640]

約数ペア:

[(1, 12717640), (2, 6358820), (4, 3179410), (5, 2543528), (8, 1589705), (10, 1271764), (13, 978280), (20, 635882), (26, 489140), (37, 343720), (40, 317941), (52, 244570), (65, 195656), (74, 171860), (104, 122285), (130, 97828), (148, 85930), (185, 68744), (260, 48914), (296, 42965), (370, 34372), (481, 26440), (520, 24457), (661, 19240), (740, 17186), (962, 13220), (1322, 9620), (1480, 8593), (1924, 6610), (2405, 5288), (2644, 4810), (3305, 3848)]