38640040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23561}}^1$

素因数の和:23613

約数の個数: 32

約数和(自身を含む): 89064360

約数和(自身を除く): 50424320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 23561, 47122, 94244, 117805, 188488, 235610, 471220, 942440, 966001, 1932002, 3864004, 4830005, 7728008, 9660010, 19320020, 38640040]

約数ペア:

[(1, 38640040), (2, 19320020), (4, 9660010), (5, 7728008), (8, 4830005), (10, 3864004), (20, 1932002), (40, 966001), (41, 942440), (82, 471220), (164, 235610), (205, 188488), (328, 117805), (410, 94244), (820, 47122), (1640, 23561)]