21913520

素因数分解:

$2^4\times 5^1\times {\mathrm{273919}}^1$

素因数の和:273932

約数の個数: 20

約数和(自身を含む): 50949120

約数和(自身を除く): 29035600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273919, 547838, 1095676, 1369595, 2191352, 2739190, 4382704, 5478380, 10956760, 21913520]

約数ペア:

[(1, 21913520), (2, 10956760), (4, 5478380), (5, 4382704), (8, 2739190), (10, 2191352), (16, 1369595), (20, 1095676), (40, 547838), (80, 273919)]