161787890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{133709}}^1$

素因数の和:133738

約数の個数: 24

約数和(自身を含む): 320101740

約数和(自身を除く): 158313850

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 133709, 267418, 668545, 1337090, 1470799, 2941598, 7353995, 14707990, 16178789, 32357578, 80893945, 161787890]

約数ペア:

[(1, 161787890), (2, 80893945), (5, 32357578), (10, 16178789), (11, 14707990), (22, 7353995), (55, 2941598), (110, 1470799), (121, 1337090), (242, 668545), (605, 267418), (1210, 133709)]