208375640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{1181}}^1$

素因数の和:1604

約数の個数: 64

約数和(自身を含む): 513177120

約数和(自身を除く): 304801480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 401, 440, 802, 1181, 1604, 2005, 2362, 3208, 4010, 4411, 4724, 5905, 8020, 8822, 9448, 11810, 12991, 16040, 17644, 22055, 23620, 25982, 35288, 44110, 47240, 51964, 64955, 88220, 103928, 129910, 176440, 259820, 473581, 519640, 947162, 1894324, 2367905, 3788648, 4735810, 5209391, 9471620, 10418782, 18943240, 20837564, 26046955, 41675128, 52093910, 104187820, 208375640]

約数ペア:

[(1, 208375640), (2, 104187820), (4, 52093910), (5, 41675128), (8, 26046955), (10, 20837564), (11, 18943240), (20, 10418782), (22, 9471620), (40, 5209391), (44, 4735810), (55, 3788648), (88, 2367905), (110, 1894324), (220, 947162), (401, 519640), (440, 473581), (802, 259820), (1181, 176440), (1604, 129910), (2005, 103928), (2362, 88220), (3208, 64955), (4010, 51964), (4411, 47240), (4724, 44110), (5905, 35288), (8020, 25982), (8822, 23620), (9448, 22055), (11810, 17644), (12991, 16040)]