21977235

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{9967}}^1$

素因数の和:9992

約数の個数: 36

約数和(自身を含む): 44317728

約数和(自身を除く): 22340493

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 9967, 29901, 49835, 69769, 89703, 149505, 209307, 348845, 448515, 488383, 627921, 1046535, 1465149, 2441915, 3139605, 4395447, 7325745, 21977235]

約数ペア:

[(1, 21977235), (3, 7325745), (5, 4395447), (7, 3139605), (9, 2441915), (15, 1465149), (21, 1046535), (35, 627921), (45, 488383), (49, 448515), (63, 348845), (105, 209307), (147, 149505), (245, 89703), (315, 69769), (441, 49835), (735, 29901), (2205, 9967)]