2157909890

素因数分解:

$2^1\times 5^1\times {\mathrm{1571}}^1\times {\mathrm{137359}}^1$

素因数の和:138937

約数の個数: 16

約数和(自身を含む): 3886738560

約数和(自身を除く): 1728828670

約数列:

[1, 2, 5, 10, 1571, 3142, 7855, 15710, 137359, 274718, 686795, 1373590, 215790989, 431581978, 1078954945, 2157909890]

約数ペア:

[(1, 2157909890), (2, 1078954945), (5, 431581978), (10, 215790989), (1571, 1373590), (3142, 686795), (7855, 274718), (15710, 137359)]