21498885

素因数分解:

$3^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{977}}^1$

素因数の和:1154

約数の個数: 32

約数和(自身を含む): 38494080

約数和(自身を除く): 16995195

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 163, 489, 815, 977, 1467, 2445, 2931, 4401, 4885, 7335, 8793, 14655, 22005, 26379, 43965, 131895, 159251, 477753, 796255, 1433259, 2388765, 4299777, 7166295, 21498885]

約数ペア:

[(1, 21498885), (3, 7166295), (5, 4299777), (9, 2388765), (15, 1433259), (27, 796255), (45, 477753), (135, 159251), (163, 131895), (489, 43965), (815, 26379), (977, 22005), (1467, 14655), (2445, 8793), (2931, 7335), (4401, 4885)]