66863920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{9391}}^1$

素因数の和:9493

約数の個数: 40

約数和(自身を含む): 157222080

約数和(自身を除く): 90358160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 9391, 18782, 37564, 46955, 75128, 93910, 150256, 187820, 375640, 751280, 835799, 1671598, 3343196, 4178995, 6686392, 8357990, 13372784, 16715980, 33431960, 66863920]

約数ペア:

[(1, 66863920), (2, 33431960), (4, 16715980), (5, 13372784), (8, 8357990), (10, 6686392), (16, 4178995), (20, 3343196), (40, 1671598), (80, 835799), (89, 751280), (178, 375640), (356, 187820), (445, 150256), (712, 93910), (890, 75128), (1424, 46955), (1780, 37564), (3560, 18782), (7120, 9391)]