19811198

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{3967}}^1$

素因数の和:4207

約数の個数: 16

約数和(自身を含む): 32569344

約数和(自身を除く): 12758146

約数列:

[1, 2, 11, 22, 227, 454, 2497, 3967, 4994, 7934, 43637, 87274, 900509, 1801018, 9905599, 19811198]

約数ペア:

[(1, 19811198), (2, 9905599), (11, 1801018), (22, 900509), (227, 87274), (454, 43637), (2497, 7934), (3967, 4994)]