131280040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{105871}}^1$

素因数の和:105913

約数の個数: 32

約数和(自身を含む): 304911360

約数和(自身を除く): 173631320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 105871, 211742, 423484, 529355, 846968, 1058710, 2117420, 3282001, 4234840, 6564002, 13128004, 16410005, 26256008, 32820010, 65640020, 131280040]

約数ペア:

[(1, 131280040), (2, 65640020), (4, 32820010), (5, 26256008), (8, 16410005), (10, 13128004), (20, 6564002), (31, 4234840), (40, 3282001), (62, 2117420), (124, 1058710), (155, 846968), (248, 529355), (310, 423484), (620, 211742), (1240, 105871)]