21659900

素因数分解:

$2^2\times 5^2\times {\mathrm{167}}^1\times {\mathrm{1297}}^1$

素因数の和:1478

約数の個数: 36

約数和(自身を含む): 47319888

約数和(自身を除く): 25659988

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 167, 334, 668, 835, 1297, 1670, 2594, 3340, 4175, 5188, 6485, 8350, 12970, 16700, 25940, 32425, 64850, 129700, 216599, 433198, 866396, 1082995, 2165990, 4331980, 5414975, 10829950, 21659900]

約数ペア:

[(1, 21659900), (2, 10829950), (4, 5414975), (5, 4331980), (10, 2165990), (20, 1082995), (25, 866396), (50, 433198), (100, 216599), (167, 129700), (334, 64850), (668, 32425), (835, 25940), (1297, 16700), (1670, 12970), (2594, 8350), (3340, 6485), (4175, 5188)]