21787486

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{953}}^1$

素因数の和:1056

約数の個数: 32

約数和(自身を含む): 39564288

約数和(自身を除く): 17776802

約数列:

[1, 2, 7, 14, 23, 46, 71, 142, 161, 322, 497, 953, 994, 1633, 1906, 3266, 6671, 11431, 13342, 21919, 22862, 43838, 67663, 135326, 153433, 306866, 473641, 947282, 1556249, 3112498, 10893743, 21787486]

約数ペア:

[(1, 21787486), (2, 10893743), (7, 3112498), (14, 1556249), (23, 947282), (46, 473641), (71, 306866), (142, 153433), (161, 135326), (322, 67663), (497, 43838), (953, 22862), (994, 21919), (1633, 13342), (1906, 11431), (3266, 6671)]