21565228

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{7669}}^1$

素因数の和:7729

約数の個数: 24

約数和(自身を含む): 40804400

約数和(自身を除く): 19239172

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 148, 703, 1406, 2812, 7669, 15338, 30676, 145711, 283753, 291422, 567506, 582844, 1135012, 5391307, 10782614, 21565228]

約数ペア:

[(1, 21565228), (2, 10782614), (4, 5391307), (19, 1135012), (37, 582844), (38, 567506), (74, 291422), (76, 283753), (148, 145711), (703, 30676), (1406, 15338), (2812, 7669)]