21149020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3659}}^1$

素因数の和:3702

約数の個数: 36

約数和(自身を含む): 47192040

約数和(自身を除く): 26043020

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3659, 5780, 7318, 14636, 18295, 36590, 62203, 73180, 124406, 248812, 311015, 622030, 1057451, 1244060, 2114902, 4229804, 5287255, 10574510, 21149020]

約数ペア:

[(1, 21149020), (2, 10574510), (4, 5287255), (5, 4229804), (10, 2114902), (17, 1244060), (20, 1057451), (34, 622030), (68, 311015), (85, 248812), (170, 124406), (289, 73180), (340, 62203), (578, 36590), (1156, 18295), (1445, 14636), (2890, 7318), (3659, 5780)]