21524984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1489}}^1$

素因数の和:1647

約数の個数: 32

約数和(自身を含む): 43806000

約数和(自身を除く): 22281016

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 139, 278, 556, 1112, 1489, 1807, 2978, 3614, 5956, 7228, 11912, 14456, 19357, 38714, 77428, 154856, 206971, 413942, 827884, 1655768, 2690623, 5381246, 10762492, 21524984]

約数ペア:

[(1, 21524984), (2, 10762492), (4, 5381246), (8, 2690623), (13, 1655768), (26, 827884), (52, 413942), (104, 206971), (139, 154856), (278, 77428), (556, 38714), (1112, 19357), (1489, 14456), (1807, 11912), (2978, 7228), (3614, 5956)]