21228273

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{6917}}^1$

素因数の和:6965

約数の個数: 24

約数和(自身を含む): 34534656

約数和(自身を除く): 13306383

約数列:

[1, 3, 9, 11, 31, 33, 93, 99, 279, 341, 1023, 3069, 6917, 20751, 62253, 76087, 214427, 228261, 643281, 684783, 1929843, 2358697, 7076091, 21228273]

約数ペア:

[(1, 21228273), (3, 7076091), (9, 2358697), (11, 1929843), (31, 684783), (33, 643281), (93, 228261), (99, 214427), (279, 76087), (341, 62253), (1023, 20751), (3069, 6917)]