28204420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{45491}}^1$

素因数の和:45531

約数の個数: 24

約数和(自身を含む): 61141248

約数和(自身を除く): 32936828

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 45491, 90982, 181964, 227455, 454910, 909820, 1410221, 2820442, 5640884, 7051105, 14102210, 28204420]

約数ペア:

[(1, 28204420), (2, 14102210), (4, 7051105), (5, 5640884), (10, 2820442), (20, 1410221), (31, 909820), (62, 454910), (124, 227455), (155, 181964), (310, 90982), (620, 45491)]