161517020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{18913}}^1$

素因数の和:18990

約数の個数: 48

約数和(自身を含む): 394016448

約数和(自身を除く): 232499428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 4270, 8540, 18913, 37826, 75652, 94565, 132391, 189130, 264782, 378260, 529564, 661955, 1153693, 1323910, 2307386, 2647820, 4614772, 5768465, 8075851, 11536930, 16151702, 23073860, 32303404, 40379255, 80758510, 161517020]

約数ペア:

[(1, 161517020), (2, 80758510), (4, 40379255), (5, 32303404), (7, 23073860), (10, 16151702), (14, 11536930), (20, 8075851), (28, 5768465), (35, 4614772), (61, 2647820), (70, 2307386), (122, 1323910), (140, 1153693), (244, 661955), (305, 529564), (427, 378260), (610, 264782), (854, 189130), (1220, 132391), (1708, 94565), (2135, 75652), (4270, 37826), (8540, 18913)]