20656920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2179}}^1$

素因数の和:2272

約数の個数: 64

約数和(自身を含む): 62784000

約数和(自身を除く): 42127080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2179, 2370, 3160, 4358, 4740, 6537, 8716, 9480, 10895, 13074, 17432, 21790, 26148, 32685, 43580, 52296, 65370, 87160, 130740, 172141, 261480, 344282, 516423, 688564, 860705, 1032846, 1377128, 1721410, 2065692, 2582115, 3442820, 4131384, 5164230, 6885640, 10328460, 20656920]

約数ペア:

[(1, 20656920), (2, 10328460), (3, 6885640), (4, 5164230), (5, 4131384), (6, 3442820), (8, 2582115), (10, 2065692), (12, 1721410), (15, 1377128), (20, 1032846), (24, 860705), (30, 688564), (40, 516423), (60, 344282), (79, 261480), (120, 172141), (158, 130740), (237, 87160), (316, 65370), (395, 52296), (474, 43580), (632, 32685), (790, 26148), (948, 21790), (1185, 17432), (1580, 13074), (1896, 10895), (2179, 9480), (2370, 8716), (3160, 6537), (4358, 4740)]