128433520

素因数分解:

$2^4\times 5^1\times {\mathrm{1605419}}^1$

素因数の和:1605432

約数の個数: 20

約数和(自身を含む): 298608120

約数和(自身を除く): 170174600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1605419, 3210838, 6421676, 8027095, 12843352, 16054190, 25686704, 32108380, 64216760, 128433520]

約数ペア:

[(1, 128433520), (2, 64216760), (4, 32108380), (5, 25686704), (8, 16054190), (10, 12843352), (16, 8027095), (20, 6421676), (40, 3210838), (80, 1605419)]