20469855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1423}}^1$

素因数の和:1575

約数の個数: 32

約数和(自身を含む): 37730304

約数和(自身を除く): 17260449

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 137, 411, 685, 959, 1423, 2055, 2877, 4269, 4795, 7115, 9961, 14385, 21345, 29883, 49805, 149415, 194951, 584853, 974755, 1364657, 2924265, 4093971, 6823285, 20469855]

約数ペア:

[(1, 20469855), (3, 6823285), (5, 4093971), (7, 2924265), (15, 1364657), (21, 974755), (35, 584853), (105, 194951), (137, 149415), (411, 49805), (685, 29883), (959, 21345), (1423, 14385), (2055, 9961), (2877, 7115), (4269, 4795)]