261462680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{210857}}^1$

素因数の和:210899

約数の個数: 32

約数和(自身を含む): 607271040

約数和(自身を除く): 345808360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 210857, 421714, 843428, 1054285, 1686856, 2108570, 4217140, 6536567, 8434280, 13073134, 26146268, 32682835, 52292536, 65365670, 130731340, 261462680]

約数ペア:

[(1, 261462680), (2, 130731340), (4, 65365670), (5, 52292536), (8, 32682835), (10, 26146268), (20, 13073134), (31, 8434280), (40, 6536567), (62, 4217140), (124, 2108570), (155, 1686856), (248, 1054285), (310, 843428), (620, 421714), (1240, 210857)]