198311560

素因数分解:

$2^3\times 5^1\times {\mathrm{4957789}}^1$

素因数の和:4957800

約数の個数: 16

約数和(自身を含む): 446201100

約数和(自身を除く): 247889540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4957789, 9915578, 19831156, 24788945, 39662312, 49577890, 99155780, 198311560]

約数ペア:

[(1, 198311560), (2, 99155780), (4, 49577890), (5, 39662312), (8, 24788945), (10, 19831156), (20, 9915578), (40, 4957789)]