21384584

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{15817}}^1$

素因数の和:15849

約数の個数: 24

約数和(自身を含む): 43420410

約数和(自身を除く): 22035826

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 15817, 31634, 63268, 126536, 205621, 411242, 822484, 1644968, 2673073, 5346146, 10692292, 21384584]

約数ペア:

[(1, 21384584), (2, 10692292), (4, 5346146), (8, 2673073), (13, 1644968), (26, 822484), (52, 411242), (104, 205621), (169, 126536), (338, 63268), (676, 31634), (1352, 15817)]