661995

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 1175616

約数和(自身を除く): 513621

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 313, 423, 705, 939, 1565, 2115, 2817, 4695, 14085, 14711, 44133, 73555, 132399, 220665, 661995]

約数ペア:

[(1, 661995), (3, 220665), (5, 132399), (9, 73555), (15, 44133), (45, 14711), (47, 14085), (141, 4695), (235, 2817), (313, 2115), (423, 1565), (705, 939)]