64667980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248723}}^1$

素因数の和:248745

約数の個数: 24

約数和(自身を含む): 146249712

約数和(自身を除く): 81581732

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 248723, 497446, 994892, 1243615, 2487230, 3233399, 4974460, 6466798, 12933596, 16166995, 32333990, 64667980]

約数ペア:

[(1, 64667980), (2, 32333990), (4, 16166995), (5, 12933596), (10, 6466798), (13, 4974460), (20, 3233399), (26, 2487230), (52, 1243615), (65, 994892), (130, 497446), (260, 248723)]