18786700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 44340912

約数和(自身を除く): 25554212

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 43, 50, 68, 85, 86, 100, 170, 172, 215, 257, 340, 425, 430, 514, 731, 850, 860, 1028, 1075, 1285, 1462, 1700, 2150, 2570, 2924, 3655, 4300, 4369, 5140, 6425, 7310, 8738, 11051, 12850, 14620, 17476, 18275, 21845, 22102, 25700, 36550, 43690, 44204, 55255, 73100, 87380, 109225, 110510, 187867, 218450, 221020, 276275, 375734, 436900, 552550, 751468, 939335, 1105100, 1878670, 3757340, 4696675, 9393350, 18786700]

約数ペア:

[(1, 18786700), (2, 9393350), (4, 4696675), (5, 3757340), (10, 1878670), (17, 1105100), (20, 939335), (25, 751468), (34, 552550), (43, 436900), (50, 375734), (68, 276275), (85, 221020), (86, 218450), (100, 187867), (170, 110510), (172, 109225), (215, 87380), (257, 73100), (340, 55255), (425, 44204), (430, 43690), (514, 36550), (731, 25700), (850, 22102), (860, 21845), (1028, 18275), (1075, 17476), (1285, 14620), (1462, 12850), (1700, 11051), (2150, 8738), (2570, 7310), (2924, 6425), (3655, 5140), (4300, 4369)]