21000884788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23756657}}^1$

素因数の和:23756691

約数の個数: 24

約数和(自身を含む): 41906744712

約数和(自身を除く): 20905859924

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 884, 23756657, 47513314, 95026628, 308836541, 403863169, 617673082, 807726338, 1235346164, 1615452676, 5250221197, 10500442394, 21000884788]

約数ペア:

[(1, 21000884788), (2, 10500442394), (4, 5250221197), (13, 1615452676), (17, 1235346164), (26, 807726338), (34, 617673082), (52, 403863169), (68, 308836541), (221, 95026628), (442, 47513314), (884, 23756657)]