15513320

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{997}}^1$

素因数の和:1397

約数の個数: 32

約数和(自身を含む): 35029800

約数和(自身を除く): 19516480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 997, 1556, 1945, 1994, 3112, 3890, 3988, 4985, 7780, 7976, 9970, 15560, 19940, 39880, 387833, 775666, 1551332, 1939165, 3102664, 3878330, 7756660, 15513320]

約数ペア:

[(1, 15513320), (2, 7756660), (4, 3878330), (5, 3102664), (8, 1939165), (10, 1551332), (20, 775666), (40, 387833), (389, 39880), (778, 19940), (997, 15560), (1556, 9970), (1945, 7976), (1994, 7780), (3112, 4985), (3890, 3988)]