20740040

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{6247}}^1$

素因数の和:6341

約数の個数: 32

約数和(自身を含む): 47234880

約数和(自身を除く): 26494840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 6247, 12494, 24988, 31235, 49976, 62470, 124940, 249880, 518501, 1037002, 2074004, 2592505, 4148008, 5185010, 10370020, 20740040]

約数ペア:

[(1, 20740040), (2, 10370020), (4, 5185010), (5, 4148008), (8, 2592505), (10, 2074004), (20, 1037002), (40, 518501), (83, 249880), (166, 124940), (332, 62470), (415, 49976), (664, 31235), (830, 24988), (1660, 12494), (3320, 6247)]