51501200

素因数分解:

$2^4\times 5^2\times {\mathrm{199}}^1\times {\mathrm{647}}^1$

素因数の和:864

約数の個数: 60

約数和(自身を含む): 124545600

約数和(自身を除く): 73044400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 199, 200, 398, 400, 647, 796, 995, 1294, 1592, 1990, 2588, 3184, 3235, 3980, 4975, 5176, 6470, 7960, 9950, 10352, 12940, 15920, 16175, 19900, 25880, 32350, 39800, 51760, 64700, 79600, 128753, 129400, 257506, 258800, 515012, 643765, 1030024, 1287530, 2060048, 2575060, 3218825, 5150120, 6437650, 10300240, 12875300, 25750600, 51501200]

約数ペア:

[(1, 51501200), (2, 25750600), (4, 12875300), (5, 10300240), (8, 6437650), (10, 5150120), (16, 3218825), (20, 2575060), (25, 2060048), (40, 1287530), (50, 1030024), (80, 643765), (100, 515012), (199, 258800), (200, 257506), (398, 129400), (400, 128753), (647, 79600), (796, 64700), (995, 51760), (1294, 39800), (1592, 32350), (1990, 25880), (2588, 19900), (3184, 16175), (3235, 15920), (3980, 12940), (4975, 10352), (5176, 9950), (6470, 7960)]