21492879

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 10730865

約数列:

[1, 3, 17, 23, 51, 69, 73, 219, 251, 391, 753, 1173, 1241, 1679, 3723, 4267, 5037, 5773, 12801, 17319, 18323, 28543, 54969, 85629, 98141, 294423, 311491, 421429, 934473, 1264287, 7164293, 21492879]

約数ペア:

[(1, 21492879), (3, 7164293), (17, 1264287), (23, 934473), (51, 421429), (69, 311491), (73, 294423), (219, 98141), (251, 85629), (391, 54969), (753, 28543), (1173, 18323), (1241, 17319), (1679, 12801), (3723, 5773), (4267, 5037)]