21824816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{331}}^1$

素因数の和:669

約数の個数: 40

約数和(自身を含む): 45819984

約数和(自身を除く): 23995168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 317, 331, 634, 662, 1268, 1324, 2536, 2648, 4121, 4303, 5072, 5296, 8242, 8606, 16484, 17212, 32968, 34424, 65936, 68848, 104927, 209854, 419708, 839416, 1364051, 1678832, 2728102, 5456204, 10912408, 21824816]

約数ペア:

[(1, 21824816), (2, 10912408), (4, 5456204), (8, 2728102), (13, 1678832), (16, 1364051), (26, 839416), (52, 419708), (104, 209854), (208, 104927), (317, 68848), (331, 65936), (634, 34424), (662, 32968), (1268, 17212), (1324, 16484), (2536, 8606), (2648, 8242), (4121, 5296), (4303, 5072)]