208780920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{579947}}^1$

素因数の和:579964

約数の個数: 48

約数和(自身を含む): 678539160

約数和(自身を除く): 469758240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 579947, 1159894, 1739841, 2319788, 2899735, 3479682, 4639576, 5219523, 5799470, 6959364, 8699205, 10439046, 11598940, 13918728, 17398410, 20878092, 23197880, 26097615, 34796820, 41756184, 52195230, 69593640, 104390460, 208780920]

約数ペア:

[(1, 208780920), (2, 104390460), (3, 69593640), (4, 52195230), (5, 41756184), (6, 34796820), (8, 26097615), (9, 23197880), (10, 20878092), (12, 17398410), (15, 13918728), (18, 11598940), (20, 10439046), (24, 8699205), (30, 6959364), (36, 5799470), (40, 5219523), (45, 4639576), (60, 3479682), (72, 2899735), (90, 2319788), (120, 1739841), (180, 1159894), (360, 579947)]