209775440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{719}}^1$

素因数の和:1260

約数の個数: 80

約数和(自身を含む): 559249920

約数和(自身を除く): 349474480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 521, 560, 719, 1042, 1438, 2084, 2605, 2876, 3595, 3647, 4168, 5033, 5210, 5752, 7190, 7294, 8336, 10066, 10420, 11504, 14380, 14588, 18235, 20132, 20840, 25165, 28760, 29176, 36470, 40264, 41680, 50330, 57520, 58352, 72940, 80528, 100660, 145880, 201320, 291760, 374599, 402640, 749198, 1498396, 1872995, 2622193, 2996792, 3745990, 5244386, 5993584, 7491980, 10488772, 13110965, 14983960, 20977544, 26221930, 29967920, 41955088, 52443860, 104887720, 209775440]

約数ペア:

[(1, 209775440), (2, 104887720), (4, 52443860), (5, 41955088), (7, 29967920), (8, 26221930), (10, 20977544), (14, 14983960), (16, 13110965), (20, 10488772), (28, 7491980), (35, 5993584), (40, 5244386), (56, 3745990), (70, 2996792), (80, 2622193), (112, 1872995), (140, 1498396), (280, 749198), (521, 402640), (560, 374599), (719, 291760), (1042, 201320), (1438, 145880), (2084, 100660), (2605, 80528), (2876, 72940), (3595, 58352), (3647, 57520), (4168, 50330), (5033, 41680), (5210, 40264), (5752, 36470), (7190, 29176), (7294, 28760), (8336, 25165), (10066, 20840), (10420, 20132), (11504, 18235), (14380, 14588)]