28191710

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 52752384

約数和(自身を除く): 24560674

約数列:

[1, 2, 5, 10, 31, 62, 155, 211, 310, 422, 431, 862, 1055, 2110, 2155, 4310, 6541, 13082, 13361, 26722, 32705, 65410, 66805, 90941, 133610, 181882, 454705, 909410, 2819171, 5638342, 14095855, 28191710]

約数ペア:

[(1, 28191710), (2, 14095855), (5, 5638342), (10, 2819171), (31, 909410), (62, 454705), (155, 181882), (211, 133610), (310, 90941), (422, 66805), (431, 65410), (862, 32705), (1055, 26722), (2110, 13361), (2155, 13082), (4310, 6541)]