18993940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{135671}}^1$

素因数の和:135687

約数の個数: 24

約数和(自身を含む): 45585792

約数和(自身を除く): 26591852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 135671, 271342, 542684, 678355, 949697, 1356710, 1899394, 2713420, 3798788, 4748485, 9496970, 18993940]

約数ペア:

[(1, 18993940), (2, 9496970), (4, 4748485), (5, 3798788), (7, 2713420), (10, 1899394), (14, 1356710), (20, 949697), (28, 678355), (35, 542684), (70, 271342), (140, 135671)]