21887905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{479}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 8755295

約数列:

[1, 5, 13, 19, 37, 65, 95, 185, 247, 479, 481, 703, 1235, 2395, 2405, 3515, 6227, 9101, 9139, 17723, 31135, 45505, 45695, 88615, 118313, 230399, 336737, 591565, 1151995, 1683685, 4377581, 21887905]

約数ペア:

[(1, 21887905), (5, 4377581), (13, 1683685), (19, 1151995), (37, 591565), (65, 336737), (95, 230399), (185, 118313), (247, 88615), (479, 45695), (481, 45505), (703, 31135), (1235, 17723), (2395, 9139), (2405, 9101), (3515, 6227)]