65138120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{37871}}^1$

素因数の和:37925

約数の個数: 32

約数和(自身を含む): 149973120

約数和(自身を除く): 84835000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 37871, 75742, 151484, 189355, 302968, 378710, 757420, 1514840, 1628453, 3256906, 6513812, 8142265, 13027624, 16284530, 32569060, 65138120]

約数ペア:

[(1, 65138120), (2, 32569060), (4, 16284530), (5, 13027624), (8, 8142265), (10, 6513812), (20, 3256906), (40, 1628453), (43, 1514840), (86, 757420), (172, 378710), (215, 302968), (344, 189355), (430, 151484), (860, 75742), (1720, 37871)]