64691991

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{78989}}^1$

素因数の和:79015

約数の個数: 24

約数和(自身を含む): 115009440

約数和(自身を除く): 50317449

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 78989, 236967, 552923, 710901, 1026857, 1658769, 3080571, 4976307, 7187999, 9241713, 21563997, 64691991]

約数ペア:

[(1, 64691991), (3, 21563997), (7, 9241713), (9, 7187999), (13, 4976307), (21, 3080571), (39, 1658769), (63, 1026857), (91, 710901), (117, 552923), (273, 236967), (819, 78989)]