21075400

素因数分解:

$2^3\times 5^2\times {\mathrm{167}}^1\times {\mathrm{631}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 49371840

約数和(自身を除く): 28296440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 167, 200, 334, 631, 668, 835, 1262, 1336, 1670, 2524, 3155, 3340, 4175, 5048, 6310, 6680, 8350, 12620, 15775, 16700, 25240, 31550, 33400, 63100, 105377, 126200, 210754, 421508, 526885, 843016, 1053770, 2107540, 2634425, 4215080, 5268850, 10537700, 21075400]

約数ペア:

[(1, 21075400), (2, 10537700), (4, 5268850), (5, 4215080), (8, 2634425), (10, 2107540), (20, 1053770), (25, 843016), (40, 526885), (50, 421508), (100, 210754), (167, 126200), (200, 105377), (334, 63100), (631, 33400), (668, 31550), (835, 25240), (1262, 16700), (1336, 15775), (1670, 12620), (2524, 8350), (3155, 6680), (3340, 6310), (4175, 5048)]