20412920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2729}}^1$

素因数の和:2768

約数の個数: 64

約数和(自身を含む): 53071200

約数和(自身を除く): 32658280

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2729, 3740, 5458, 7480, 10916, 13645, 21832, 27290, 30019, 46393, 54580, 60038, 92786, 109160, 120076, 150095, 185572, 231965, 240152, 300190, 371144, 463930, 510323, 600380, 927860, 1020646, 1200760, 1855720, 2041292, 2551615, 4082584, 5103230, 10206460, 20412920]

約数ペア:

[(1, 20412920), (2, 10206460), (4, 5103230), (5, 4082584), (8, 2551615), (10, 2041292), (11, 1855720), (17, 1200760), (20, 1020646), (22, 927860), (34, 600380), (40, 510323), (44, 463930), (55, 371144), (68, 300190), (85, 240152), (88, 231965), (110, 185572), (136, 150095), (170, 120076), (187, 109160), (220, 92786), (340, 60038), (374, 54580), (440, 46393), (680, 30019), (748, 27290), (935, 21832), (1496, 13645), (1870, 10916), (2729, 7480), (3740, 5458)]