20262880

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:452

約数の個数: 96

約数和(自身を含む): 54159840

約数和(自身を除く): 33896960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 32, 40, 44, 55, 58, 80, 88, 110, 116, 145, 160, 176, 220, 232, 290, 319, 352, 397, 440, 464, 580, 638, 794, 880, 928, 1160, 1276, 1588, 1595, 1760, 1985, 2320, 2552, 3176, 3190, 3970, 4367, 4640, 5104, 6352, 6380, 7940, 8734, 10208, 11513, 12704, 12760, 15880, 17468, 21835, 23026, 25520, 31760, 34936, 43670, 46052, 51040, 57565, 63520, 69872, 87340, 92104, 115130, 126643, 139744, 174680, 184208, 230260, 253286, 349360, 368416, 460520, 506572, 633215, 698720, 921040, 1013144, 1266430, 1842080, 2026288, 2532860, 4052576, 5065720, 10131440, 20262880]

約数ペア:

[(1, 20262880), (2, 10131440), (4, 5065720), (5, 4052576), (8, 2532860), (10, 2026288), (11, 1842080), (16, 1266430), (20, 1013144), (22, 921040), (29, 698720), (32, 633215), (40, 506572), (44, 460520), (55, 368416), (58, 349360), (80, 253286), (88, 230260), (110, 184208), (116, 174680), (145, 139744), (160, 126643), (176, 115130), (220, 92104), (232, 87340), (290, 69872), (319, 63520), (352, 57565), (397, 51040), (440, 46052), (464, 43670), (580, 34936), (638, 31760), (794, 25520), (880, 23026), (928, 21835), (1160, 17468), (1276, 15880), (1588, 12760), (1595, 12704), (1760, 11513), (1985, 10208), (2320, 8734), (2552, 7940), (3176, 6380), (3190, 6352), (3970, 5104), (4367, 4640)]