153940420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{248291}}^1$

素因数の和:248331

約数の個数: 24

約数和(自身を含む): 333704448

約数和(自身を除く): 179764028

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 248291, 496582, 993164, 1241455, 2482910, 4965820, 7697021, 15394042, 30788084, 38485105, 76970210, 153940420]

約数ペア:

[(1, 153940420), (2, 76970210), (4, 38485105), (5, 30788084), (10, 15394042), (20, 7697021), (31, 4965820), (62, 2482910), (124, 1241455), (155, 993164), (310, 496582), (620, 248291)]