21100900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2671}}^1$

素因数の和:2764

約数の個数: 36

約数和(自身を含む): 46385920

約数和(自身を除く): 25285020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2671, 3950, 5342, 7900, 10684, 13355, 26710, 53420, 66775, 133550, 211009, 267100, 422018, 844036, 1055045, 2110090, 4220180, 5275225, 10550450, 21100900]

約数ペア:

[(1, 21100900), (2, 10550450), (4, 5275225), (5, 4220180), (10, 2110090), (20, 1055045), (25, 844036), (50, 422018), (79, 267100), (100, 211009), (158, 133550), (316, 66775), (395, 53420), (790, 26710), (1580, 13355), (1975, 10684), (2671, 7900), (3950, 5342)]