21866397

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7829}}^1$

素因数の和:7865

約数の個数: 24

約数和(自身を含む): 35704800

約数和(自身を除く): 13838403

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7829, 23487, 54803, 148751, 164409, 383621, 446253, 1041257, 1150863, 3123771, 7288799, 21866397]

約数ペア:

[(1, 21866397), (3, 7288799), (7, 3123771), (19, 1150863), (21, 1041257), (49, 446253), (57, 383621), (133, 164409), (147, 148751), (399, 54803), (931, 23487), (2793, 7829)]