31687120

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{919}}^1$

素因数の和:1363

約数の個数: 40

約数和(自身を含む): 73923840

約数和(自身を除く): 42236720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 862, 919, 1724, 1838, 2155, 3448, 3676, 4310, 4595, 6896, 7352, 8620, 9190, 14704, 17240, 18380, 34480, 36760, 73520, 396089, 792178, 1584356, 1980445, 3168712, 3960890, 6337424, 7921780, 15843560, 31687120]

約数ペア:

[(1, 31687120), (2, 15843560), (4, 7921780), (5, 6337424), (8, 3960890), (10, 3168712), (16, 1980445), (20, 1584356), (40, 792178), (80, 396089), (431, 73520), (862, 36760), (919, 34480), (1724, 18380), (1838, 17240), (2155, 14704), (3448, 9190), (3676, 8620), (4310, 7352), (4595, 6896)]