21570305

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2447}}^1$

素因数の和:2536

約数の個数: 16

約数和(自身を含む): 27143424

約数和(自身を除く): 5573119

約数列:

[1, 5, 41, 43, 205, 215, 1763, 2447, 8815, 12235, 100327, 105221, 501635, 526105, 4314061, 21570305]

約数ペア:

[(1, 21570305), (5, 4314061), (41, 526105), (43, 501635), (205, 105221), (215, 100327), (1763, 12235), (2447, 8815)]