18842980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{137}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 44872632

約数和(自身を除く): 26029652

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 137, 230, 260, 274, 299, 460, 529, 548, 598, 685, 1058, 1196, 1370, 1495, 1781, 2116, 2645, 2740, 2990, 3151, 3562, 5290, 5980, 6302, 6877, 7124, 8905, 10580, 12604, 13754, 15755, 17810, 27508, 31510, 34385, 35620, 40963, 63020, 68770, 72473, 81926, 137540, 144946, 163852, 204815, 289892, 362365, 409630, 724730, 819260, 942149, 1449460, 1884298, 3768596, 4710745, 9421490, 18842980]

約数ペア:

[(1, 18842980), (2, 9421490), (4, 4710745), (5, 3768596), (10, 1884298), (13, 1449460), (20, 942149), (23, 819260), (26, 724730), (46, 409630), (52, 362365), (65, 289892), (92, 204815), (115, 163852), (130, 144946), (137, 137540), (230, 81926), (260, 72473), (274, 68770), (299, 63020), (460, 40963), (529, 35620), (548, 34385), (598, 31510), (685, 27508), (1058, 17810), (1196, 15755), (1370, 13754), (1495, 12604), (1781, 10580), (2116, 8905), (2645, 7124), (2740, 6877), (2990, 6302), (3151, 5980), (3562, 5290)]