81086840

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20071}}^1$

素因数の和:20183

約数の個数: 32

約数和(自身を含む): 184260960

約数和(自身を除く): 103174120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 20071, 40142, 80284, 100355, 160568, 200710, 401420, 802840, 2027171, 4054342, 8108684, 10135855, 16217368, 20271710, 40543420, 81086840]

約数ペア:

[(1, 81086840), (2, 40543420), (4, 20271710), (5, 16217368), (8, 10135855), (10, 8108684), (20, 4054342), (40, 2027171), (101, 802840), (202, 401420), (404, 200710), (505, 160568), (808, 100355), (1010, 80284), (2020, 40142), (4040, 20071)]