81983990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{811}}^1\times {\mathrm{919}}^1$

素因数の和:1748

約数の個数: 32

約数和(自身を含む): 161360640

約数和(自身を除く): 79376650

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 811, 919, 1622, 1838, 4055, 4595, 8110, 8921, 9190, 10109, 17842, 20218, 44605, 50545, 89210, 101090, 745309, 1490618, 3726545, 7453090, 8198399, 16396798, 40991995, 81983990]

約数ペア:

[(1, 81983990), (2, 40991995), (5, 16396798), (10, 8198399), (11, 7453090), (22, 3726545), (55, 1490618), (110, 745309), (811, 101090), (919, 89210), (1622, 50545), (1838, 44605), (4055, 20218), (4595, 17842), (8110, 10109), (8921, 9190)]