65640020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{105871}}^1$

素因数の和:105911

約数の個数: 24

約数和(自身を含む): 142291968

約数和(自身を除く): 76651948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 105871, 211742, 423484, 529355, 1058710, 2117420, 3282001, 6564002, 13128004, 16410005, 32820010, 65640020]

約数ペア:

[(1, 65640020), (2, 32820010), (4, 16410005), (5, 13128004), (10, 6564002), (20, 3282001), (31, 2117420), (62, 1058710), (124, 529355), (155, 423484), (310, 211742), (620, 105871)]