210975820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:359

約数の個数: 96

約数和(自身を含む): 499968000

約数和(自身を除く): 288992180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 79, 110, 122, 158, 199, 220, 244, 305, 316, 395, 398, 610, 671, 790, 796, 869, 995, 1220, 1342, 1580, 1738, 1990, 2189, 2684, 3355, 3476, 3980, 4345, 4378, 4819, 6710, 8690, 8756, 9638, 10945, 12139, 13420, 15721, 17380, 19276, 21890, 24095, 24278, 31442, 43780, 48190, 48556, 53009, 60695, 62884, 78605, 96380, 106018, 121390, 133529, 157210, 172931, 212036, 242780, 265045, 267058, 314420, 345862, 530090, 534116, 667645, 691724, 864655, 958981, 1060180, 1335290, 1729310, 1917962, 2670580, 3458620, 3835924, 4794905, 9589810, 10548791, 19179620, 21097582, 42195164, 52743955, 105487910, 210975820]

約数ペア:

[(1, 210975820), (2, 105487910), (4, 52743955), (5, 42195164), (10, 21097582), (11, 19179620), (20, 10548791), (22, 9589810), (44, 4794905), (55, 3835924), (61, 3458620), (79, 2670580), (110, 1917962), (122, 1729310), (158, 1335290), (199, 1060180), (220, 958981), (244, 864655), (305, 691724), (316, 667645), (395, 534116), (398, 530090), (610, 345862), (671, 314420), (790, 267058), (796, 265045), (869, 242780), (995, 212036), (1220, 172931), (1342, 157210), (1580, 133529), (1738, 121390), (1990, 106018), (2189, 96380), (2684, 78605), (3355, 62884), (3476, 60695), (3980, 53009), (4345, 48556), (4378, 48190), (4819, 43780), (6710, 31442), (8690, 24278), (8756, 24095), (9638, 21890), (10945, 19276), (12139, 17380), (13420, 15721)]