205959640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1543}}^1$

素因数の和:1672

約数の個数: 64

約数和(自身を含む): 480245760

約数和(自身を除く): 274286120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 71, 94, 142, 188, 235, 284, 355, 376, 470, 568, 710, 940, 1420, 1543, 1880, 2840, 3086, 3337, 6172, 6674, 7715, 12344, 13348, 15430, 16685, 26696, 30860, 33370, 61720, 66740, 72521, 109553, 133480, 145042, 219106, 290084, 362605, 438212, 547765, 580168, 725210, 876424, 1095530, 1450420, 2191060, 2900840, 4382120, 5148991, 10297982, 20595964, 25744955, 41191928, 51489910, 102979820, 205959640]

約数ペア:

[(1, 205959640), (2, 102979820), (4, 51489910), (5, 41191928), (8, 25744955), (10, 20595964), (20, 10297982), (40, 5148991), (47, 4382120), (71, 2900840), (94, 2191060), (142, 1450420), (188, 1095530), (235, 876424), (284, 725210), (355, 580168), (376, 547765), (470, 438212), (568, 362605), (710, 290084), (940, 219106), (1420, 145042), (1543, 133480), (1880, 109553), (2840, 72521), (3086, 66740), (3337, 61720), (6172, 33370), (6674, 30860), (7715, 26696), (12344, 16685), (13348, 15430)]