39839620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{461}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 87318000

約数和(自身を除く): 47478380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 149, 290, 298, 461, 580, 596, 745, 922, 1490, 1844, 2305, 2980, 4321, 4610, 8642, 9220, 13369, 17284, 21605, 26738, 43210, 53476, 66845, 68689, 86420, 133690, 137378, 267380, 274756, 343445, 686890, 1373780, 1991981, 3983962, 7967924, 9959905, 19919810, 39839620]

約数ペア:

[(1, 39839620), (2, 19919810), (4, 9959905), (5, 7967924), (10, 3983962), (20, 1991981), (29, 1373780), (58, 686890), (116, 343445), (145, 274756), (149, 267380), (290, 137378), (298, 133690), (461, 86420), (580, 68689), (596, 66845), (745, 53476), (922, 43210), (1490, 26738), (1844, 21605), (2305, 17284), (2980, 13369), (4321, 9220), (4610, 8642)]