18516628

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4001}}^1$

素因数の和:4107

約数の個数: 24

約数和(自身を含む): 35297640

約数和(自身を除く): 16781012

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4001, 4628, 8002, 16004, 52013, 104026, 208052, 356089, 712178, 1424356, 4629157, 9258314, 18516628]

約数ペア:

[(1, 18516628), (2, 9258314), (4, 4629157), (13, 1424356), (26, 712178), (52, 356089), (89, 208052), (178, 104026), (356, 52013), (1157, 16004), (2314, 8002), (4001, 4628)]