15991520

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1123}}^1$

素因数の和:1227

約数の個数: 48

約数和(自身を含む): 38238480

約数和(自身を除く): 22246960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1123, 1424, 1780, 2246, 2848, 3560, 4492, 5615, 7120, 8984, 11230, 14240, 17968, 22460, 35936, 44920, 89840, 99947, 179680, 199894, 399788, 499735, 799576, 999470, 1599152, 1998940, 3198304, 3997880, 7995760, 15991520]

約数ペア:

[(1, 15991520), (2, 7995760), (4, 3997880), (5, 3198304), (8, 1998940), (10, 1599152), (16, 999470), (20, 799576), (32, 499735), (40, 399788), (80, 199894), (89, 179680), (160, 99947), (178, 89840), (356, 44920), (445, 35936), (712, 22460), (890, 17968), (1123, 14240), (1424, 11230), (1780, 8984), (2246, 7120), (2848, 5615), (3560, 4492)]