20500695

素因数分解:

$3^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{359}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17238825

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 243, 359, 405, 423, 705, 1077, 1215, 1269, 1795, 2115, 3231, 3807, 5385, 6345, 9693, 11421, 16155, 16873, 19035, 29079, 48465, 50619, 57105, 84365, 87237, 145395, 151857, 253095, 436185, 455571, 759285, 1366713, 2277855, 4100139, 6833565, 20500695]

約数ペア:

[(1, 20500695), (3, 6833565), (5, 4100139), (9, 2277855), (15, 1366713), (27, 759285), (45, 455571), (47, 436185), (81, 253095), (135, 151857), (141, 145395), (235, 87237), (243, 84365), (359, 57105), (405, 50619), (423, 48465), (705, 29079), (1077, 19035), (1215, 16873), (1269, 16155), (1795, 11421), (2115, 9693), (3231, 6345), (3807, 5385)]