128802780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{715571}}^1$

素因数の和:715586

約数の個数: 36

約数和(自身を含む): 390702312

約数和(自身を除く): 261899532

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 715571, 1431142, 2146713, 2862284, 3577855, 4293426, 6440139, 7155710, 8586852, 10733565, 12880278, 14311420, 21467130, 25760556, 32200695, 42934260, 64401390, 128802780]

約数ペア:

[(1, 128802780), (2, 64401390), (3, 42934260), (4, 32200695), (5, 25760556), (6, 21467130), (9, 14311420), (10, 12880278), (12, 10733565), (15, 8586852), (18, 7155710), (20, 6440139), (30, 4293426), (36, 3577855), (45, 2862284), (60, 2146713), (90, 1431142), (180, 715571)]