21446420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34591}}^1$

素因数の和:34631

約数の個数: 24

約数和(自身を含む): 46491648

約数和(自身を除く): 25045228

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34591, 69182, 138364, 172955, 345910, 691820, 1072321, 2144642, 4289284, 5361605, 10723210, 21446420]

約数ペア:

[(1, 21446420), (2, 10723210), (4, 5361605), (5, 4289284), (10, 2144642), (20, 1072321), (31, 691820), (62, 345910), (124, 172955), (155, 138364), (310, 69182), (620, 34591)]