19805001

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 29196288

約数和(自身を除く): 9391287

約数列:

[1, 3, 23, 31, 47, 69, 93, 141, 197, 591, 713, 1081, 1457, 2139, 3243, 4371, 4531, 6107, 9259, 13593, 18321, 27777, 33511, 100533, 140461, 212957, 287029, 421383, 638871, 861087, 6601667, 19805001]

約数ペア:

[(1, 19805001), (3, 6601667), (23, 861087), (31, 638871), (47, 421383), (69, 287029), (93, 212957), (141, 140461), (197, 100533), (591, 33511), (713, 27777), (1081, 18321), (1457, 13593), (2139, 9259), (3243, 6107), (4371, 4531)]