21654690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{9137}}^1$

素因数の和:9226

約数の個数: 32

約数和(自身を含む): 52634880

約数和(自身を除く): 30980190

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 79, 158, 237, 395, 474, 790, 1185, 2370, 9137, 18274, 27411, 45685, 54822, 91370, 137055, 274110, 721823, 1443646, 2165469, 3609115, 4330938, 7218230, 10827345, 21654690]

約数ペア:

[(1, 21654690), (2, 10827345), (3, 7218230), (5, 4330938), (6, 3609115), (10, 2165469), (15, 1443646), (30, 721823), (79, 274110), (158, 137055), (237, 91370), (395, 54822), (474, 45685), (790, 27411), (1185, 18274), (2370, 9137)]