20993128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{2081}}^1$

素因数の和:2197

約数の個数: 32

約数和(自身を含む): 42847560

約数和(自身を除く): 21854432

約数列:

[1, 2, 4, 8, 13, 26, 52, 97, 104, 194, 388, 776, 1261, 2081, 2522, 4162, 5044, 8324, 10088, 16648, 27053, 54106, 108212, 201857, 216424, 403714, 807428, 1614856, 2624141, 5248282, 10496564, 20993128]

約数ペア:

[(1, 20993128), (2, 10496564), (4, 5248282), (8, 2624141), (13, 1614856), (26, 807428), (52, 403714), (97, 216424), (104, 201857), (194, 108212), (388, 54106), (776, 27053), (1261, 16648), (2081, 10088), (2522, 8324), (4162, 5044)]