21885370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2131}}^1$

素因数の和:2230

約数の個数: 32

約数和(自身を含む): 42981120

約数和(自身を除く): 21095750

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2054, 2131, 4262, 5135, 10270, 10655, 21310, 27703, 55406, 138515, 168349, 277030, 336698, 841745, 1683490, 2188537, 4377074, 10942685, 21885370]

約数ペア:

[(1, 21885370), (2, 10942685), (5, 4377074), (10, 2188537), (13, 1683490), (26, 841745), (65, 336698), (79, 277030), (130, 168349), (158, 138515), (395, 55406), (790, 27703), (1027, 21310), (2054, 10655), (2131, 10270), (4262, 5135)]