21743735

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{199}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 28946400

約数和(自身を除く): 7202665

約数列:

[1, 5, 13, 41, 65, 199, 205, 533, 995, 1681, 2587, 2665, 8159, 8405, 12935, 21853, 40795, 106067, 109265, 334519, 530335, 1672595, 4348747, 21743735]

約数ペア:

[(1, 21743735), (5, 4348747), (13, 1672595), (41, 530335), (65, 334519), (199, 109265), (205, 106067), (533, 40795), (995, 21853), (1681, 12935), (2587, 8405), (2665, 8159)]