21490474

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{769}}^1$

素因数の和:1017

約数の個数: 16

約数和(自身を含む): 32848200

約数和(自身を除く): 11357726

約数列:

[1, 2, 89, 157, 178, 314, 769, 1538, 13973, 27946, 68441, 120733, 136882, 241466, 10745237, 21490474]

約数ペア:

[(1, 21490474), (2, 10745237), (89, 241466), (157, 136882), (178, 120733), (314, 68441), (769, 27946), (1538, 13973)]