1998100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:109

約数の個数: 72

約数和(自身を含む): 4921560

約数和(自身を除く): 2923460

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 29, 50, 52, 53, 58, 65, 100, 106, 116, 130, 145, 212, 260, 265, 290, 325, 377, 530, 580, 650, 689, 725, 754, 1060, 1300, 1325, 1378, 1450, 1508, 1537, 1885, 2650, 2756, 2900, 3074, 3445, 3770, 5300, 6148, 6890, 7540, 7685, 9425, 13780, 15370, 17225, 18850, 19981, 30740, 34450, 37700, 38425, 39962, 68900, 76850, 79924, 99905, 153700, 199810, 399620, 499525, 999050, 1998100]

約数ペア:

[(1, 1998100), (2, 999050), (4, 499525), (5, 399620), (10, 199810), (13, 153700), (20, 99905), (25, 79924), (26, 76850), (29, 68900), (50, 39962), (52, 38425), (53, 37700), (58, 34450), (65, 30740), (100, 19981), (106, 18850), (116, 17225), (130, 15370), (145, 13780), (212, 9425), (260, 7685), (265, 7540), (290, 6890), (325, 6148), (377, 5300), (530, 3770), (580, 3445), (650, 3074), (689, 2900), (725, 2756), (754, 2650), (1060, 1885), (1300, 1537), (1325, 1508), (1378, 1450)]