21273140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 53996544

約数和(自身を除く): 32723404

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 53, 61, 70, 94, 106, 122, 140, 188, 212, 235, 244, 265, 305, 329, 371, 427, 470, 530, 610, 658, 742, 854, 940, 1060, 1220, 1316, 1484, 1645, 1708, 1855, 2135, 2491, 2867, 3233, 3290, 3710, 4270, 4982, 5734, 6466, 6580, 7420, 8540, 9964, 11468, 12455, 12932, 14335, 16165, 17437, 20069, 22631, 24910, 28670, 32330, 34874, 40138, 45262, 49820, 57340, 64660, 69748, 80276, 87185, 90524, 100345, 113155, 151951, 174370, 200690, 226310, 303902, 348740, 401380, 452620, 607804, 759755, 1063657, 1519510, 2127314, 3039020, 4254628, 5318285, 10636570, 21273140]

約数ペア:

[(1, 21273140), (2, 10636570), (4, 5318285), (5, 4254628), (7, 3039020), (10, 2127314), (14, 1519510), (20, 1063657), (28, 759755), (35, 607804), (47, 452620), (53, 401380), (61, 348740), (70, 303902), (94, 226310), (106, 200690), (122, 174370), (140, 151951), (188, 113155), (212, 100345), (235, 90524), (244, 87185), (265, 80276), (305, 69748), (329, 64660), (371, 57340), (427, 49820), (470, 45262), (530, 40138), (610, 34874), (658, 32330), (742, 28670), (854, 24910), (940, 22631), (1060, 20069), (1220, 17437), (1316, 16165), (1484, 14335), (1645, 12932), (1708, 12455), (1855, 11468), (2135, 9964), (2491, 8540), (2867, 7420), (3233, 6580), (3290, 6466), (3710, 5734), (4270, 4982)]