21880803

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{3167}}^1$

素因数の和:3231

約数の個数: 24

約数和(自身を含む): 34670592

約数和(自身を除く): 12789789

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 3167, 6909, 9501, 22169, 66507, 148849, 155183, 446547, 465549, 1041943, 3125829, 7293601, 21880803]

約数ペア:

[(1, 21880803), (3, 7293601), (7, 3125829), (21, 1041943), (47, 465549), (49, 446547), (141, 155183), (147, 148849), (329, 66507), (987, 22169), (2303, 9501), (3167, 6909)]