72007978

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{1999}}^1$

素因数の和:2122

約数の個数: 32

約数和(自身を含む): 129024000

約数和(自身を除く): 57016022

約数列:

[1, 2, 7, 14, 31, 62, 83, 166, 217, 434, 581, 1162, 1999, 2573, 3998, 5146, 13993, 18011, 27986, 36022, 61969, 123938, 165917, 331834, 433783, 867566, 1161419, 2322838, 5143427, 10286854, 36003989, 72007978]

約数ペア:

[(1, 72007978), (2, 36003989), (7, 10286854), (14, 5143427), (31, 2322838), (62, 1161419), (83, 867566), (166, 433783), (217, 331834), (434, 165917), (581, 123938), (1162, 61969), (1999, 36022), (2573, 27986), (3998, 18011), (5146, 13993)]