20764208

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{787}}^1$

素因数の和:909

約数の個数: 40

約数和(自身を含む): 43090992

約数和(自身を除く): 22326784

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 97, 136, 194, 272, 388, 776, 787, 1552, 1574, 1649, 3148, 3298, 6296, 6596, 12592, 13192, 13379, 26384, 26758, 53516, 76339, 107032, 152678, 214064, 305356, 610712, 1221424, 1297763, 2595526, 5191052, 10382104, 20764208]

約数ペア:

[(1, 20764208), (2, 10382104), (4, 5191052), (8, 2595526), (16, 1297763), (17, 1221424), (34, 610712), (68, 305356), (97, 214064), (136, 152678), (194, 107032), (272, 76339), (388, 53516), (776, 26758), (787, 26384), (1552, 13379), (1574, 13192), (1649, 12592), (3148, 6596), (3298, 6296)]