21739340

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{3169}}^1$

素因数の和:3199

約数の個数: 48

約数和(自身を含む): 53256000

約数和(自身を除く): 31516660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3169, 3430, 6338, 6860, 12676, 15845, 22183, 31690, 44366, 63380, 88732, 110915, 155281, 221830, 310562, 443660, 621124, 776405, 1086967, 1552810, 2173934, 3105620, 4347868, 5434835, 10869670, 21739340]

約数ペア:

[(1, 21739340), (2, 10869670), (4, 5434835), (5, 4347868), (7, 3105620), (10, 2173934), (14, 1552810), (20, 1086967), (28, 776405), (35, 621124), (49, 443660), (70, 310562), (98, 221830), (140, 155281), (196, 110915), (245, 88732), (343, 63380), (490, 44366), (686, 31690), (980, 22183), (1372, 15845), (1715, 12676), (3169, 6860), (3430, 6338)]