21552885

素因数分解:

$3^{10}\times 5^1\times {\mathrm{73}}^1$

素因数の和:108

約数の個数: 44

約数和(自身を含む): 39326412

約数和(自身を除く): 17773527

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 81, 135, 219, 243, 365, 405, 657, 729, 1095, 1215, 1971, 2187, 3285, 3645, 5913, 6561, 9855, 10935, 17739, 19683, 29565, 32805, 53217, 59049, 88695, 98415, 159651, 266085, 295245, 478953, 798255, 1436859, 2394765, 4310577, 7184295, 21552885]

約数ペア:

[(1, 21552885), (3, 7184295), (5, 4310577), (9, 2394765), (15, 1436859), (27, 798255), (45, 478953), (73, 295245), (81, 266085), (135, 159651), (219, 98415), (243, 88695), (365, 59049), (405, 53217), (657, 32805), (729, 29565), (1095, 19683), (1215, 17739), (1971, 10935), (2187, 9855), (3285, 6561), (3645, 5913)]