199909855

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{7723}}^1$

素因数の和:7926

約数の個数: 16

約数和(自身を含む): 249145344

約数和(自身を除く): 49235489

約数列:

[1, 5, 31, 155, 167, 835, 5177, 7723, 25885, 38615, 239413, 1197065, 1289741, 6448705, 39981971, 199909855]

約数ペア:

[(1, 199909855), (5, 39981971), (31, 6448705), (155, 1289741), (167, 1197065), (835, 239413), (5177, 38615), (7723, 25885)]