180000005

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1\times {\mathrm{3617}}^1$

素因数の和:3928

約数の個数: 16

約数和(自身を含む): 222724080

約数和(自身を除く): 42724075

約数列:

[1, 5, 37, 185, 269, 1345, 3617, 9953, 18085, 49765, 133829, 669145, 972973, 4864865, 36000001, 180000005]

約数ペア:

[(1, 180000005), (5, 36000001), (37, 4864865), (185, 972973), (269, 669145), (1345, 133829), (3617, 49765), (9953, 18085)]