20464520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26927}}^1$

素因数の和:26957

約数の個数: 32

約数和(自身を含む): 48470400

約数和(自身を除く): 28005880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 26927, 53854, 107708, 134635, 215416, 269270, 511613, 538540, 1023226, 1077080, 2046452, 2558065, 4092904, 5116130, 10232260, 20464520]

約数ペア:

[(1, 20464520), (2, 10232260), (4, 5116130), (5, 4092904), (8, 2558065), (10, 2046452), (19, 1077080), (20, 1023226), (38, 538540), (40, 511613), (76, 269270), (95, 215416), (152, 134635), (190, 107708), (380, 53854), (760, 26927)]