15961840

素因数分解:

$2^4\times 5^1\times {\mathrm{199523}}^1$

素因数の和:199536

約数の個数: 20

約数和(自身を含む): 37111464

約数和(自身を除く): 21149624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199523, 399046, 798092, 997615, 1596184, 1995230, 3192368, 3990460, 7980920, 15961840]

約数ペア:

[(1, 15961840), (2, 7980920), (4, 3990460), (5, 3192368), (8, 1995230), (10, 1596184), (16, 997615), (20, 798092), (40, 399046), (80, 199523)]