638248900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{173}}^1\times {\mathrm{467}}^1$

素因数の和:733

約数の個数: 72

約数和(自身を含む): 1413659520

約数和(自身を除く): 775410620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 173, 316, 346, 395, 467, 692, 790, 865, 934, 1580, 1730, 1868, 1975, 2335, 3460, 3950, 4325, 4670, 7900, 8650, 9340, 11675, 13667, 17300, 23350, 27334, 36893, 46700, 54668, 68335, 73786, 80791, 136670, 147572, 161582, 184465, 273340, 323164, 341675, 368930, 403955, 683350, 737860, 807910, 922325, 1366700, 1615820, 1844650, 2019775, 3689300, 4039550, 6382489, 8079100, 12764978, 25529956, 31912445, 63824890, 127649780, 159562225, 319124450, 638248900]

約数ペア:

[(1, 638248900), (2, 319124450), (4, 159562225), (5, 127649780), (10, 63824890), (20, 31912445), (25, 25529956), (50, 12764978), (79, 8079100), (100, 6382489), (158, 4039550), (173, 3689300), (316, 2019775), (346, 1844650), (395, 1615820), (467, 1366700), (692, 922325), (790, 807910), (865, 737860), (934, 683350), (1580, 403955), (1730, 368930), (1868, 341675), (1975, 323164), (2335, 273340), (3460, 184465), (3950, 161582), (4325, 147572), (4670, 136670), (7900, 80791), (8650, 73786), (9340, 68335), (11675, 54668), (13667, 46700), (17300, 36893), (23350, 27334)]