21476745

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2791}}^1$

素因数の和:2827

約数の個数: 40

約数和(自身を含む): 40539840

約数和(自身を除く): 19063095

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2791, 7695, 8373, 13955, 25119, 41865, 53029, 75357, 125595, 159087, 226071, 265145, 376785, 477261, 795435, 1130355, 1431783, 2386305, 4295349, 7158915, 21476745]

約数ペア:

[(1, 21476745), (3, 7158915), (5, 4295349), (9, 2386305), (15, 1431783), (19, 1130355), (27, 795435), (45, 477261), (57, 376785), (81, 265145), (95, 226071), (135, 159087), (171, 125595), (285, 75357), (405, 53029), (513, 41865), (855, 25119), (1539, 13955), (2565, 8373), (2791, 7695)]