17985890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4463}}^1$

素因数の和:4514

約数の個数: 32

約数和(自身を含む): 35997696

約数和(自身を除く): 18011806

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 4463, 8926, 22315, 44630, 58019, 116038, 138353, 276706, 290095, 580190, 691765, 1383530, 1798589, 3597178, 8992945, 17985890]

約数ペア:

[(1, 17985890), (2, 8992945), (5, 3597178), (10, 1798589), (13, 1383530), (26, 691765), (31, 580190), (62, 290095), (65, 276706), (130, 138353), (155, 116038), (310, 58019), (403, 44630), (806, 22315), (2015, 8926), (4030, 4463)]