161785690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{9871}}^1$

素因数の和:10038

約数の個数: 32

約数和(自身を含む): 319852800

約数和(自身を除く): 158067110

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 149, 298, 745, 1490, 1639, 3278, 8195, 9871, 16390, 19742, 49355, 98710, 108581, 217162, 542905, 1085810, 1470779, 2941558, 7353895, 14707790, 16178569, 32357138, 80892845, 161785690]

約数ペア:

[(1, 161785690), (2, 80892845), (5, 32357138), (10, 16178569), (11, 14707790), (22, 7353895), (55, 2941558), (110, 1470779), (149, 1085810), (298, 542905), (745, 217162), (1490, 108581), (1639, 98710), (3278, 49355), (8195, 19742), (9871, 16390)]