257907855

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{10529}}^1$

素因数の和:10631

約数の個数: 32

約数和(自身を含む): 436700160

約数和(自身を除く): 178792305

約数列:

[1, 3, 5, 15, 23, 69, 71, 115, 213, 345, 355, 1065, 1633, 4899, 8165, 10529, 24495, 31587, 52645, 157935, 242167, 726501, 747559, 1210835, 2242677, 3632505, 3737795, 11213385, 17193857, 51581571, 85969285, 257907855]

約数ペア:

[(1, 257907855), (3, 85969285), (5, 51581571), (15, 17193857), (23, 11213385), (69, 3737795), (71, 3632505), (115, 2242677), (213, 1210835), (345, 747559), (355, 726501), (1065, 242167), (1633, 157935), (4899, 52645), (8165, 31587), (10529, 24495)]