21371427

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30839}}^1$

素因数の和:30863

約数の個数: 24

約数和(自身を含む): 38488320

約数和(自身を除く): 17116893

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30839, 92517, 215873, 277551, 339229, 647619, 1017687, 1942857, 2374603, 3053061, 7123809, 21371427]

約数ペア:

[(1, 21371427), (3, 7123809), (7, 3053061), (9, 2374603), (11, 1942857), (21, 1017687), (33, 647619), (63, 339229), (77, 277551), (99, 215873), (231, 92517), (693, 30839)]