20647675

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{241}}^1$

素因数の和:423

約数の個数: 24

約数和(自身を含む): 27007200

約数和(自身を除く): 6359525

約数列:

[1, 5, 23, 25, 115, 149, 241, 575, 745, 1205, 3427, 3725, 5543, 6025, 17135, 27715, 35909, 85675, 138575, 179545, 825907, 897725, 4129535, 20647675]

約数ペア:

[(1, 20647675), (5, 4129535), (23, 897725), (25, 825907), (115, 179545), (149, 138575), (241, 85675), (575, 35909), (745, 27715), (1205, 17135), (3427, 6025), (3725, 5543)]