64448540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247879}}^1$

素因数の和:247901

約数の個数: 24

約数和(自身を含む): 145753440

約数和(自身を除く): 81304900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 247879, 495758, 991516, 1239395, 2478790, 3222427, 4957580, 6444854, 12889708, 16112135, 32224270, 64448540]

約数ペア:

[(1, 64448540), (2, 32224270), (4, 16112135), (5, 12889708), (10, 6444854), (13, 4957580), (20, 3222427), (26, 2478790), (52, 1239395), (65, 991516), (130, 495758), (260, 247879)]