21767620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1747}}^1$

素因数の和:1852

約数の個数: 48

約数和(自身を含む): 52859520

約数和(自身を除く): 31091900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1747, 1780, 2492, 3115, 3494, 6230, 6988, 8735, 12229, 12460, 17470, 24458, 34940, 48916, 61145, 122290, 155483, 244580, 310966, 621932, 777415, 1088381, 1554830, 2176762, 3109660, 4353524, 5441905, 10883810, 21767620]

約数ペア:

[(1, 21767620), (2, 10883810), (4, 5441905), (5, 4353524), (7, 3109660), (10, 2176762), (14, 1554830), (20, 1088381), (28, 777415), (35, 621932), (70, 310966), (89, 244580), (140, 155483), (178, 122290), (356, 61145), (445, 48916), (623, 34940), (890, 24458), (1246, 17470), (1747, 12460), (1780, 12229), (2492, 8735), (3115, 6988), (3494, 6230)]