21121850

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{13627}}^1$

素因数の和:13670

約数の個数: 24

約数和(自身を含む): 40556928

約数和(自身を除く): 19435078

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 775, 1550, 13627, 27254, 68135, 136270, 340675, 422437, 681350, 844874, 2112185, 4224370, 10560925, 21121850]

約数ペア:

[(1, 21121850), (2, 10560925), (5, 4224370), (10, 2112185), (25, 844874), (31, 681350), (50, 422437), (62, 340675), (155, 136270), (310, 68135), (775, 27254), (1550, 13627)]