20789378

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 34013952

約数和(自身を除く): 13224574

約数列:

[1, 2, 23, 41, 46, 73, 82, 146, 151, 302, 943, 1679, 1886, 2993, 3358, 3473, 5986, 6191, 6946, 11023, 12382, 22046, 68839, 137678, 142393, 253529, 284786, 451943, 507058, 903886, 10394689, 20789378]

約数ペア:

[(1, 20789378), (2, 10394689), (23, 903886), (41, 507058), (46, 451943), (73, 284786), (82, 253529), (146, 142393), (151, 137678), (302, 68839), (943, 22046), (1679, 12382), (1886, 11023), (2993, 6946), (3358, 6191), (3473, 5986)]