280056478

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{3271}}^1$

素因数の和:3412

約数の個数: 32

約数和(自身を含む): 469990080

約数和(自身を除く): 189933602

約数列:

[1, 2, 13, 26, 37, 74, 89, 178, 481, 962, 1157, 2314, 3271, 3293, 6542, 6586, 42523, 42809, 85046, 85618, 121027, 242054, 291119, 582238, 1573351, 3146702, 3784547, 7569094, 10771403, 21542806, 140028239, 280056478]

約数ペア:

[(1, 280056478), (2, 140028239), (13, 21542806), (26, 10771403), (37, 7569094), (74, 3784547), (89, 3146702), (178, 1573351), (481, 582238), (962, 291119), (1157, 242054), (2314, 121027), (3271, 85618), (3293, 85046), (6542, 42809), (6586, 42523)]