128180920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{457789}}^1$

素因数の和:457807

約数の個数: 32

約数和(自身を含む): 329608800

約数和(自身を除く): 201427880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 457789, 915578, 1831156, 2288945, 3204523, 3662312, 4577890, 6409046, 9155780, 12818092, 16022615, 18311560, 25636184, 32045230, 64090460, 128180920]

約数ペア:

[(1, 128180920), (2, 64090460), (4, 32045230), (5, 25636184), (7, 18311560), (8, 16022615), (10, 12818092), (14, 9155780), (20, 6409046), (28, 4577890), (35, 3662312), (40, 3204523), (56, 2288945), (70, 1831156), (140, 915578), (280, 457789)]