15917680

素因数分解:

$2^4\times 5^1\times {\mathrm{198971}}^1$

素因数の和:198984

約数の個数: 20

約数和(自身を含む): 37008792

約数和(自身を除く): 21091112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198971, 397942, 795884, 994855, 1591768, 1989710, 3183536, 3979420, 7958840, 15917680]

約数ペア:

[(1, 15917680), (2, 7958840), (4, 3979420), (5, 3183536), (8, 1989710), (10, 1591768), (16, 994855), (20, 795884), (40, 397942), (80, 198971)]