21790210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5407}}^1$

素因数の和:5458

約数の個数: 32

約数和(自身を含む): 43610112

約数和(自身を除く): 21819902

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5407, 10814, 27035, 54070, 70291, 140582, 167617, 335234, 351455, 702910, 838085, 1676170, 2179021, 4358042, 10895105, 21790210]

約数ペア:

[(1, 21790210), (2, 10895105), (5, 4358042), (10, 2179021), (13, 1676170), (26, 838085), (31, 702910), (62, 351455), (65, 335234), (130, 167617), (155, 140582), (310, 70291), (403, 54070), (806, 27035), (2015, 10814), (4030, 5407)]