56405480

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23117}}^1$

素因数の和:23189

約数の個数: 32

約数和(自身を含む): 128998440

約数和(自身を除く): 72592960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 23117, 46234, 92468, 115585, 184936, 231170, 462340, 924680, 1410137, 2820274, 5640548, 7050685, 11281096, 14101370, 28202740, 56405480]

約数ペア:

[(1, 56405480), (2, 28202740), (4, 14101370), (5, 11281096), (8, 7050685), (10, 5640548), (20, 2820274), (40, 1410137), (61, 924680), (122, 462340), (244, 231170), (305, 184936), (488, 115585), (610, 92468), (1220, 46234), (2440, 23117)]