217804545

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{25609}}^1$

素因数の和:25636

約数の個数: 48

約数和(自身を含む): 447457920

約数和(自身を除く): 229653375

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2835, 8505, 25609, 76827, 128045, 179263, 230481, 384135, 537789, 691443, 896315, 1152405, 1613367, 2074329, 2688945, 3457215, 4840101, 6222987, 8066835, 10371645, 14520303, 24200505, 31114935, 43560909, 72601515, 217804545]

約数ペア:

[(1, 217804545), (3, 72601515), (5, 43560909), (7, 31114935), (9, 24200505), (15, 14520303), (21, 10371645), (27, 8066835), (35, 6222987), (45, 4840101), (63, 3457215), (81, 2688945), (105, 2074329), (135, 1613367), (189, 1152405), (243, 896315), (315, 691443), (405, 537789), (567, 384135), (945, 230481), (1215, 179263), (1701, 128045), (2835, 76827), (8505, 25609)]