20616680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2539}}^1$

素因数の和:2586

約数の個数: 64

約数和(自身を含む): 54864000

約数和(自身を除く): 34247320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2539, 4060, 5078, 8120, 10156, 12695, 17773, 20312, 25390, 35546, 50780, 71092, 73631, 88865, 101560, 142184, 147262, 177730, 294524, 355460, 368155, 515417, 589048, 710920, 736310, 1030834, 1472620, 2061668, 2577085, 2945240, 4123336, 5154170, 10308340, 20616680]

約数ペア:

[(1, 20616680), (2, 10308340), (4, 5154170), (5, 4123336), (7, 2945240), (8, 2577085), (10, 2061668), (14, 1472620), (20, 1030834), (28, 736310), (29, 710920), (35, 589048), (40, 515417), (56, 368155), (58, 355460), (70, 294524), (116, 177730), (140, 147262), (145, 142184), (203, 101560), (232, 88865), (280, 73631), (290, 71092), (406, 50780), (580, 35546), (812, 25390), (1015, 20312), (1160, 17773), (1624, 12695), (2030, 10156), (2539, 8120), (4060, 5078)]