21097713

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{709}}^1$

素因数の和:841

約数の個数: 32

約数和(自身を含む): 34988800

約数和(自身を除く): 13891087

約数列:

[1, 3, 7, 13, 21, 39, 91, 109, 273, 327, 709, 763, 1417, 2127, 2289, 4251, 4963, 9217, 9919, 14889, 27651, 29757, 64519, 77281, 193557, 231843, 540967, 1004653, 1622901, 3013959, 7032571, 21097713]

約数ペア:

[(1, 21097713), (3, 7032571), (7, 3013959), (13, 1622901), (21, 1004653), (39, 540967), (91, 231843), (109, 193557), (273, 77281), (327, 64519), (709, 29757), (763, 27651), (1417, 14889), (2127, 9919), (2289, 9217), (4251, 4963)]