15419960

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{991}}^1$

素因数の和:1391

約数の個数: 32

約数和(自身を含む): 34819200

約数和(自身を除く): 19399240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 991, 1556, 1945, 1982, 3112, 3890, 3964, 4955, 7780, 7928, 9910, 15560, 19820, 39640, 385499, 770998, 1541996, 1927495, 3083992, 3854990, 7709980, 15419960]

約数ペア:

[(1, 15419960), (2, 7709980), (4, 3854990), (5, 3083992), (8, 1927495), (10, 1541996), (20, 770998), (40, 385499), (389, 39640), (778, 19820), (991, 15560), (1556, 9910), (1945, 7928), (1982, 7780), (3112, 4955), (3890, 3964)]