21890360

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{167}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 51710400

約数和(自身を除く): 29820040

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 113, 116, 145, 167, 226, 232, 290, 334, 452, 565, 580, 668, 835, 904, 1130, 1160, 1336, 1670, 2260, 3277, 3340, 4520, 4843, 6554, 6680, 9686, 13108, 16385, 18871, 19372, 24215, 26216, 32770, 37742, 38744, 48430, 65540, 75484, 94355, 96860, 131080, 150968, 188710, 193720, 377420, 547259, 754840, 1094518, 2189036, 2736295, 4378072, 5472590, 10945180, 21890360]

約数ペア:

[(1, 21890360), (2, 10945180), (4, 5472590), (5, 4378072), (8, 2736295), (10, 2189036), (20, 1094518), (29, 754840), (40, 547259), (58, 377420), (113, 193720), (116, 188710), (145, 150968), (167, 131080), (226, 96860), (232, 94355), (290, 75484), (334, 65540), (452, 48430), (565, 38744), (580, 37742), (668, 32770), (835, 26216), (904, 24215), (1130, 19372), (1160, 18871), (1336, 16385), (1670, 13108), (2260, 9686), (3277, 6680), (3340, 6554), (4520, 4843)]