21262095

素因数分解:

$3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1117}}^1$

素因数の和:1181

約数の個数: 40

約数和(自身を含む): 38960064

約数和(自身を除く): 17697969

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 405, 423, 705, 1117, 1269, 2115, 3351, 3807, 5585, 6345, 10053, 16755, 19035, 30159, 50265, 52499, 90477, 150795, 157497, 262495, 452385, 472491, 787485, 1417473, 2362455, 4252419, 7087365, 21262095]

約数ペア:

[(1, 21262095), (3, 7087365), (5, 4252419), (9, 2362455), (15, 1417473), (27, 787485), (45, 472491), (47, 452385), (81, 262495), (135, 157497), (141, 150795), (235, 90477), (405, 52499), (423, 50265), (705, 30159), (1117, 19035), (1269, 16755), (2115, 10053), (3351, 6345), (3807, 5585)]