21243915

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6131}}^1$

素因数の和:6160

約数の個数: 48

約数和(自身を含む): 45916416

約数和(自身を除く): 24672501

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 165, 231, 315, 385, 495, 693, 1155, 3465, 6131, 18393, 30655, 42917, 55179, 67441, 91965, 128751, 202323, 214585, 275895, 337205, 386253, 472087, 606969, 643755, 1011615, 1416261, 1931265, 2360435, 3034845, 4248783, 7081305, 21243915]

約数ペア:

[(1, 21243915), (3, 7081305), (5, 4248783), (7, 3034845), (9, 2360435), (11, 1931265), (15, 1416261), (21, 1011615), (33, 643755), (35, 606969), (45, 472087), (55, 386253), (63, 337205), (77, 275895), (99, 214585), (105, 202323), (165, 128751), (231, 91965), (315, 67441), (385, 55179), (495, 42917), (693, 30655), (1155, 18393), (3465, 6131)]