21303820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34361}}^1$

素因数の和:34401

約数の個数: 24

約数和(自身を含む): 46182528

約数和(自身を除く): 24878708

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34361, 68722, 137444, 171805, 343610, 687220, 1065191, 2130382, 4260764, 5325955, 10651910, 21303820]

約数ペア:

[(1, 21303820), (2, 10651910), (4, 5325955), (5, 4260764), (10, 2130382), (20, 1065191), (31, 687220), (62, 343610), (124, 171805), (155, 137444), (310, 68722), (620, 34361)]