19871955

素因数分解:

$3^2\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1153}}^1$

素因数の和:1547

約数の個数: 24

約数和(自身を含む): 34564608

約数和(自身を除く): 14692653

約数列:

[1, 3, 5, 9, 15, 45, 383, 1149, 1153, 1915, 3447, 3459, 5745, 5765, 10377, 17235, 17295, 51885, 441599, 1324797, 2207995, 3974391, 6623985, 19871955]

約数ペア:

[(1, 19871955), (3, 6623985), (5, 3974391), (9, 2207995), (15, 1324797), (45, 441599), (383, 51885), (1149, 17295), (1153, 17235), (1915, 10377), (3447, 5765), (3459, 5745)]