21204178988

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{63868009}}^1$

素因数の和:63868096

約数の個数: 12

約数和(自身を含む): 37554389880

約数和(自身を除く): 16350210892

約数列:

[1, 2, 4, 83, 166, 332, 63868009, 127736018, 255472036, 5301044747, 10602089494, 21204178988]

約数ペア:

[(1, 21204178988), (2, 10602089494), (4, 5301044747), (83, 255472036), (166, 127736018), (332, 63868009)]