21811995

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10313}}^1$

素因数の和:10371

約数の個数: 24

約数和(自身を含む): 38615616

約数和(自身を除く): 16803621

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10313, 30939, 51565, 92817, 154695, 464085, 484711, 1454133, 2423555, 4362399, 7270665, 21811995]

約数ペア:

[(1, 21811995), (3, 7270665), (5, 4362399), (9, 2423555), (15, 1454133), (45, 484711), (47, 464085), (141, 154695), (235, 92817), (423, 51565), (705, 30939), (2115, 10313)]