21997222

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{383}}^1$

素因数の和:492

約数の個数: 24

約数和(自身を含む): 36400896

約数和(自身を除く): 14403674

約数列:

[1, 2, 13, 26, 47, 94, 383, 611, 766, 1222, 2209, 4418, 4979, 9958, 18001, 28717, 36002, 57434, 234013, 468026, 846047, 1692094, 10998611, 21997222]

約数ペア:

[(1, 21997222), (2, 10998611), (13, 1692094), (26, 846047), (47, 468026), (94, 234013), (383, 57434), (611, 36002), (766, 28717), (1222, 18001), (2209, 9958), (4418, 4979)]