21888405

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6317}}^1$

素因数の和:6346

約数の個数: 48

約数和(自身を含む): 47309184

約数和(自身を除く): 25420779

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, 6317, 18951, 31585, 44219, 56853, 69487, 94755, 132657, 208461, 221095, 284265, 347435, 397971, 486409, 625383, 663285, 1042305, 1459227, 1989855, 2432045, 3126915, 4377681, 7296135, 21888405]

約数ペア:

[(1, 21888405), (3, 7296135), (5, 4377681), (7, 3126915), (9, 2432045), (11, 1989855), (15, 1459227), (21, 1042305), (33, 663285), (35, 625383), (45, 486409), (55, 397971), (63, 347435), (77, 284265), (99, 221095), (105, 208461), (165, 132657), (231, 94755), (315, 69487), (385, 56853), (495, 44219), (693, 31585), (1155, 18951), (3465, 6317)]