64817420

素因数分解:

$2^2\times 5^1\times {\mathrm{1217}}^1\times {\mathrm{2663}}^1$

素因数の和:3889

約数の個数: 24

約数和(自身を含む): 136279584

約数和(自身を除く): 71462164

約数列:

[1, 2, 4, 5, 10, 20, 1217, 2434, 2663, 4868, 5326, 6085, 10652, 12170, 13315, 24340, 26630, 53260, 3240871, 6481742, 12963484, 16204355, 32408710, 64817420]

約数ペア:

[(1, 64817420), (2, 32408710), (4, 16204355), (5, 12963484), (10, 6481742), (20, 3240871), (1217, 53260), (2434, 26630), (2663, 24340), (4868, 13315), (5326, 12170), (6085, 10652)]