21305310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54629}}^1$

素因数の和:54652

約数の個数: 32

約数和(自身を含む): 55067040

約数和(自身を除く): 33761730

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54629, 109258, 163887, 273145, 327774, 546290, 710177, 819435, 1420354, 1638870, 2130531, 3550885, 4261062, 7101770, 10652655, 21305310]

約数ペア:

[(1, 21305310), (2, 10652655), (3, 7101770), (5, 4261062), (6, 3550885), (10, 2130531), (13, 1638870), (15, 1420354), (26, 819435), (30, 710177), (39, 546290), (65, 327774), (78, 273145), (130, 163887), (195, 109258), (390, 54629)]