21693080

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5591}}^1$

素因数の和:5699

約数の個数: 32

約数和(自身を含む): 49321440

約数和(自身を除く): 27628360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5591, 11182, 22364, 27955, 44728, 55910, 111820, 223640, 542327, 1084654, 2169308, 2711635, 4338616, 5423270, 10846540, 21693080]

約数ペア:

[(1, 21693080), (2, 10846540), (4, 5423270), (5, 4338616), (8, 2711635), (10, 2169308), (20, 1084654), (40, 542327), (97, 223640), (194, 111820), (388, 55910), (485, 44728), (776, 27955), (970, 22364), (1940, 11182), (3880, 5591)]