256954280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{1471}}^1$

素因数の和:1890

約数の個数: 64

約数和(自身を含む): 632724480

約数和(自身を除く): 375770200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 397, 440, 794, 1471, 1588, 1985, 2942, 3176, 3970, 4367, 5884, 7355, 7940, 8734, 11768, 14710, 15880, 16181, 17468, 21835, 29420, 32362, 34936, 43670, 58840, 64724, 80905, 87340, 129448, 161810, 174680, 323620, 583987, 647240, 1167974, 2335948, 2919935, 4671896, 5839870, 6423857, 11679740, 12847714, 23359480, 25695428, 32119285, 51390856, 64238570, 128477140, 256954280]

約数ペア:

[(1, 256954280), (2, 128477140), (4, 64238570), (5, 51390856), (8, 32119285), (10, 25695428), (11, 23359480), (20, 12847714), (22, 11679740), (40, 6423857), (44, 5839870), (55, 4671896), (88, 2919935), (110, 2335948), (220, 1167974), (397, 647240), (440, 583987), (794, 323620), (1471, 174680), (1588, 161810), (1985, 129448), (2942, 87340), (3176, 80905), (3970, 64724), (4367, 58840), (5884, 43670), (7355, 34936), (7940, 32362), (8734, 29420), (11768, 21835), (14710, 17468), (15880, 16181)]