128476790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{2293}}^1$

素因数の和:2744

約数の個数: 32

約数和(自身を含む): 249734016

約数和(自身を除く): 121257226

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 431, 862, 2155, 2293, 4310, 4586, 5603, 11206, 11465, 22930, 28015, 29809, 56030, 59618, 149045, 298090, 988283, 1976566, 4941415, 9882830, 12847679, 25695358, 64238395, 128476790]

約数ペア:

[(1, 128476790), (2, 64238395), (5, 25695358), (10, 12847679), (13, 9882830), (26, 4941415), (65, 1976566), (130, 988283), (431, 298090), (862, 149045), (2155, 59618), (2293, 56030), (4310, 29809), (4586, 28015), (5603, 22930), (11206, 11465)]