208370815

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{877}}^1$

素因数の和:1003

約数の個数: 32

約数和(自身を含む): 274357440

約数和(自身を除く): 65986625

約数列:

[1, 5, 19, 41, 61, 95, 205, 305, 779, 877, 1159, 2501, 3895, 4385, 5795, 12505, 16663, 35957, 47519, 53497, 83315, 179785, 237595, 267485, 683183, 1016443, 2193377, 3415915, 5082215, 10966885, 41674163, 208370815]

約数ペア:

[(1, 208370815), (5, 41674163), (19, 10966885), (41, 5082215), (61, 3415915), (95, 2193377), (205, 1016443), (305, 683183), (779, 267485), (877, 237595), (1159, 179785), (2501, 83315), (3895, 53497), (4385, 47519), (5795, 35957), (12505, 16663)]