1948448800

素因数分解:

$2^5\times 5^2\times {\mathrm{199}}^1\times {\mathrm{12239}}^1$

素因数の和:12458

約数の個数: 72

約数和(自身を含む): 4780944000

約数和(自身を除く): 2832495200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 199, 200, 398, 400, 796, 800, 995, 1592, 1990, 3184, 3980, 4975, 6368, 7960, 9950, 12239, 15920, 19900, 24478, 31840, 39800, 48956, 61195, 79600, 97912, 122390, 159200, 195824, 244780, 305975, 391648, 489560, 611950, 979120, 1223900, 1958240, 2435561, 2447800, 4871122, 4895600, 9742244, 9791200, 12177805, 19484488, 24355610, 38968976, 48711220, 60889025, 77937952, 97422440, 121778050, 194844880, 243556100, 389689760, 487112200, 974224400, 1948448800]

約数ペア:

[(1, 1948448800), (2, 974224400), (4, 487112200), (5, 389689760), (8, 243556100), (10, 194844880), (16, 121778050), (20, 97422440), (25, 77937952), (32, 60889025), (40, 48711220), (50, 38968976), (80, 24355610), (100, 19484488), (160, 12177805), (199, 9791200), (200, 9742244), (398, 4895600), (400, 4871122), (796, 2447800), (800, 2435561), (995, 1958240), (1592, 1223900), (1990, 979120), (3184, 611950), (3980, 489560), (4975, 391648), (6368, 305975), (7960, 244780), (9950, 195824), (12239, 159200), (15920, 122390), (19900, 97912), (24478, 79600), (31840, 61195), (39800, 48956)]