20894419

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 27417600

約数和(自身を除く): 6523181

約数列:

[1, 7, 13, 23, 67, 91, 149, 161, 299, 469, 871, 1043, 1541, 1937, 2093, 3427, 6097, 9983, 10787, 13559, 20033, 23989, 44551, 69881, 129779, 140231, 229609, 311857, 908453, 1607263, 2984917, 20894419]

約数ペア:

[(1, 20894419), (7, 2984917), (13, 1607263), (23, 908453), (67, 311857), (91, 229609), (149, 140231), (161, 129779), (299, 69881), (469, 44551), (871, 23989), (1043, 20033), (1541, 13559), (1937, 10787), (2093, 9983), (3427, 6097)]