21000921885

素因数分解:

$3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{950483}}^1$

素因数の和:950985

約数の個数: 24

約数和(自身を含む): 36475773984

約数和(自身を除く): 15474852099

約数列:

[1, 3, 5, 9, 15, 45, 491, 1473, 2455, 4419, 7365, 22095, 950483, 2851449, 4752415, 8554347, 14257245, 42771735, 466687153, 1400061459, 2333435765, 4200184377, 7000307295, 21000921885]

約数ペア:

[(1, 21000921885), (3, 7000307295), (5, 4200184377), (9, 2333435765), (15, 1400061459), (45, 466687153), (491, 42771735), (1473, 14257245), (2455, 8554347), (4419, 4752415), (7365, 2851449), (22095, 950483)]