1991231450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3063433}}^1$

素因数の和:3063458

約数の個数: 24

約数和(自身を含む): 3988591068

約数和(自身を除く): 1997359618

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 3063433, 6126866, 15317165, 30634330, 39824629, 76585825, 79649258, 153171650, 199123145, 398246290, 995615725, 1991231450]

約数ペア:

[(1, 1991231450), (2, 995615725), (5, 398246290), (10, 199123145), (13, 153171650), (25, 79649258), (26, 76585825), (50, 39824629), (65, 30634330), (130, 15317165), (325, 6126866), (650, 3063433)]