1639454978

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{19417}}^1$

素因数の和:19626

約数の個数: 32

約数和(自身を含む): 2904311424

約数和(自身を除く): 1264856446

約数列:

[1, 2, 7, 14, 37, 74, 163, 259, 326, 518, 1141, 2282, 6031, 12062, 19417, 38834, 42217, 84434, 135919, 271838, 718429, 1436858, 3164971, 5029003, 6329942, 10058006, 22154797, 44309594, 117103927, 234207854, 819727489, 1639454978]

約数ペア:

[(1, 1639454978), (2, 819727489), (7, 234207854), (14, 117103927), (37, 44309594), (74, 22154797), (163, 10058006), (259, 6329942), (326, 5029003), (518, 3164971), (1141, 1436858), (2282, 718429), (6031, 271838), (12062, 135919), (19417, 84434), (38834, 42217)]