25279340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{499}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 56700000

約数和(自身を除く): 31420660

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 149, 170, 298, 340, 499, 596, 745, 998, 1490, 1996, 2495, 2533, 2980, 4990, 5066, 8483, 9980, 10132, 12665, 16966, 25330, 33932, 42415, 50660, 74351, 84830, 148702, 169660, 297404, 371755, 743510, 1263967, 1487020, 2527934, 5055868, 6319835, 12639670, 25279340]

約数ペア:

[(1, 25279340), (2, 12639670), (4, 6319835), (5, 5055868), (10, 2527934), (17, 1487020), (20, 1263967), (34, 743510), (68, 371755), (85, 297404), (149, 169660), (170, 148702), (298, 84830), (340, 74351), (499, 50660), (596, 42415), (745, 33932), (998, 25330), (1490, 16966), (1996, 12665), (2495, 10132), (2533, 9980), (2980, 8483), (4990, 5066)]