21091460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3527}}^1$

素因数の和:3572

約数の個数: 48

約数和(自身を含む): 49787136

約数和(自身を除く): 28695676

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3527, 5980, 7054, 14108, 17635, 35270, 45851, 70540, 81121, 91702, 162242, 183404, 229255, 324484, 405605, 458510, 811210, 917020, 1054573, 1622420, 2109146, 4218292, 5272865, 10545730, 21091460]

約数ペア:

[(1, 21091460), (2, 10545730), (4, 5272865), (5, 4218292), (10, 2109146), (13, 1622420), (20, 1054573), (23, 917020), (26, 811210), (46, 458510), (52, 405605), (65, 324484), (92, 229255), (115, 183404), (130, 162242), (230, 91702), (260, 81121), (299, 70540), (460, 45851), (598, 35270), (1196, 17635), (1495, 14108), (2990, 7054), (3527, 5980)]