21162700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1$

素因数の和:323

約数の個数: 72

約数和(自身を含む): 50357888

約数和(自身を除く): 29195188

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 73, 100, 130, 146, 223, 260, 292, 325, 365, 446, 650, 730, 892, 949, 1115, 1300, 1460, 1825, 1898, 2230, 2899, 3650, 3796, 4460, 4745, 5575, 5798, 7300, 9490, 11150, 11596, 14495, 16279, 18980, 22300, 23725, 28990, 32558, 47450, 57980, 65116, 72475, 81395, 94900, 144950, 162790, 211627, 289900, 325580, 406975, 423254, 813950, 846508, 1058135, 1627900, 2116270, 4232540, 5290675, 10581350, 21162700]

約数ペア:

[(1, 21162700), (2, 10581350), (4, 5290675), (5, 4232540), (10, 2116270), (13, 1627900), (20, 1058135), (25, 846508), (26, 813950), (50, 423254), (52, 406975), (65, 325580), (73, 289900), (100, 211627), (130, 162790), (146, 144950), (223, 94900), (260, 81395), (292, 72475), (325, 65116), (365, 57980), (446, 47450), (650, 32558), (730, 28990), (892, 23725), (949, 22300), (1115, 18980), (1300, 16279), (1460, 14495), (1825, 11596), (1898, 11150), (2230, 9490), (2899, 7300), (3650, 5798), (3796, 5575), (4460, 4745)]