219728990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{31891}}^1$

素因数の和:31964

約数の個数: 32

約数和(自身を含む): 433986336

約数和(自身を除く): 214257346

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3445, 6890, 31891, 63782, 159455, 318910, 414583, 829166, 1690223, 2072915, 3380446, 4145830, 8451115, 16902230, 21972899, 43945798, 109864495, 219728990]

約数ペア:

[(1, 219728990), (2, 109864495), (5, 43945798), (10, 21972899), (13, 16902230), (26, 8451115), (53, 4145830), (65, 3380446), (106, 2072915), (130, 1690223), (265, 829166), (530, 414583), (689, 318910), (1378, 159455), (3445, 63782), (6890, 31891)]