1989877755

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{16651}}^1$

素因数の和:16947

約数の個数: 32

約数和(自身を含む): 3299493888

約数和(自身を除く): 1309616133

約数列:

[1, 3, 5, 15, 31, 93, 155, 257, 465, 771, 1285, 3855, 7967, 16651, 23901, 39835, 49953, 83255, 119505, 249765, 516181, 1548543, 2580905, 4279307, 7742715, 12837921, 21396535, 64189605, 132658517, 397975551, 663292585, 1989877755]

約数ペア:

[(1, 1989877755), (3, 663292585), (5, 397975551), (15, 132658517), (31, 64189605), (93, 21396535), (155, 12837921), (257, 7742715), (465, 4279307), (771, 2580905), (1285, 1548543), (3855, 516181), (7967, 249765), (16651, 119505), (23901, 83255), (39835, 49953)]