21386805

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{571}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 37559808

約数和(自身を除く): 16173003

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 227, 571, 681, 1135, 1713, 2497, 2855, 3405, 6281, 7491, 8565, 12485, 18843, 31405, 37455, 94215, 129617, 388851, 648085, 1425787, 1944255, 4277361, 7128935, 21386805]

約数ペア:

[(1, 21386805), (3, 7128935), (5, 4277361), (11, 1944255), (15, 1425787), (33, 648085), (55, 388851), (165, 129617), (227, 94215), (571, 37455), (681, 31405), (1135, 18843), (1713, 12485), (2497, 8565), (2855, 7491), (3405, 6281)]