21497685

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{1153}}^1$

素因数の和:1285

約数の個数: 32

約数和(自身を含む): 37888128

約数和(自身を除く): 16390443

約数列:

[1, 3, 5, 11, 15, 33, 55, 113, 165, 339, 565, 1153, 1243, 1695, 3459, 3729, 5765, 6215, 12683, 17295, 18645, 38049, 63415, 130289, 190245, 390867, 651445, 1433179, 1954335, 4299537, 7165895, 21497685]

約数ペア:

[(1, 21497685), (3, 7165895), (5, 4299537), (11, 1954335), (15, 1433179), (33, 651445), (55, 390867), (113, 190245), (165, 130289), (339, 63415), (565, 38049), (1153, 18645), (1243, 17295), (1695, 12683), (3459, 6215), (3729, 5765)]