12912811280

素因数分解:

$2^4\times 5^1\times {\mathrm{8609}}^1\times {\mathrm{18749}}^1$

素因数の和:27371

約数の個数: 40

約数和(自身を含む): 30027375000

約数和(自身を除く): 17114563720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8609, 17218, 18749, 34436, 37498, 43045, 68872, 74996, 86090, 93745, 137744, 149992, 172180, 187490, 299984, 344360, 374980, 688720, 749960, 1499920, 161410141, 322820282, 645640564, 807050705, 1291281128, 1614101410, 2582562256, 3228202820, 6456405640, 12912811280]

約数ペア:

[(1, 12912811280), (2, 6456405640), (4, 3228202820), (5, 2582562256), (8, 1614101410), (10, 1291281128), (16, 807050705), (20, 645640564), (40, 322820282), (80, 161410141), (8609, 1499920), (17218, 749960), (18749, 688720), (34436, 374980), (37498, 344360), (43045, 299984), (68872, 187490), (74996, 172180), (86090, 149992), (93745, 137744)]