21912860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26723}}^1$

素因数の和:26773

約数の個数: 24

約数和(自身を含む): 47141136

約数和(自身を除く): 25228276

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26723, 53446, 106892, 133615, 267230, 534460, 1095643, 2191286, 4382572, 5478215, 10956430, 21912860]

約数ペア:

[(1, 21912860), (2, 10956430), (4, 5478215), (5, 4382572), (10, 2191286), (20, 1095643), (41, 534460), (82, 267230), (164, 133615), (205, 106892), (410, 53446), (820, 26723)]