620166640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{180281}}^1$

素因数の和:180337

約数の個数: 40

約数和(自身を含む): 1475427888

約数和(自身を除く): 855261248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 180281, 360562, 721124, 901405, 1442248, 1802810, 2884496, 3605620, 7211240, 7752083, 14422480, 15504166, 31008332, 38760415, 62016664, 77520830, 124033328, 155041660, 310083320, 620166640]

約数ペア:

[(1, 620166640), (2, 310083320), (4, 155041660), (5, 124033328), (8, 77520830), (10, 62016664), (16, 38760415), (20, 31008332), (40, 15504166), (43, 14422480), (80, 7752083), (86, 7211240), (172, 3605620), (215, 2884496), (344, 1802810), (430, 1442248), (688, 901405), (860, 721124), (1720, 360562), (3440, 180281)]