21779988

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 54999168

約数和(自身を除く): 33219180

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 47, 69, 73, 92, 94, 138, 141, 146, 188, 219, 276, 282, 292, 438, 529, 564, 876, 1058, 1081, 1587, 1679, 2116, 2162, 3174, 3243, 3358, 3431, 4324, 5037, 6348, 6486, 6716, 6862, 10074, 10293, 12972, 13724, 20148, 20586, 24863, 38617, 41172, 49726, 74589, 77234, 78913, 99452, 115851, 149178, 154468, 157826, 231702, 236739, 298356, 315652, 463404, 473478, 946956, 1814999, 3629998, 5444997, 7259996, 10889994, 21779988]

約数ペア:

[(1, 21779988), (2, 10889994), (3, 7259996), (4, 5444997), (6, 3629998), (12, 1814999), (23, 946956), (46, 473478), (47, 463404), (69, 315652), (73, 298356), (92, 236739), (94, 231702), (138, 157826), (141, 154468), (146, 149178), (188, 115851), (219, 99452), (276, 78913), (282, 77234), (292, 74589), (438, 49726), (529, 41172), (564, 38617), (876, 24863), (1058, 20586), (1081, 20148), (1587, 13724), (1679, 12972), (2116, 10293), (2162, 10074), (3174, 6862), (3243, 6716), (3358, 6486), (3431, 6348), (4324, 5037)]