19894780

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{8803}}^1$

素因数の和:8925

約数の個数: 24

約数和(自身を含む): 42153552

約数和(自身を除く): 22258772

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 8803, 17606, 35212, 44015, 88030, 176060, 994739, 1989478, 3978956, 4973695, 9947390, 19894780]

約数ペア:

[(1, 19894780), (2, 9947390), (4, 4973695), (5, 3978956), (10, 1989478), (20, 994739), (113, 176060), (226, 88030), (452, 44015), (565, 35212), (1130, 17606), (2260, 8803)]