647240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1471}}^1$

素因数の和:1493

約数の個数: 32

約数和(自身を含む): 1589760

約数和(自身を除く): 942520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1471, 2942, 5884, 7355, 11768, 14710, 16181, 29420, 32362, 58840, 64724, 80905, 129448, 161810, 323620, 647240]

約数ペア:

[(1, 647240), (2, 323620), (4, 161810), (5, 129448), (8, 80905), (10, 64724), (11, 58840), (20, 32362), (22, 29420), (40, 16181), (44, 14710), (55, 11768), (88, 7355), (110, 5884), (220, 2942), (440, 1471)]