31780028

素因数分解:

$2^2\times 7^2\times {\mathrm{162143}}^1$

素因数の和:162161

約数の個数: 18

約数和(自身を含む): 64695456

約数和(自身を除く): 32915428

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 162143, 324286, 648572, 1135001, 2270002, 4540004, 7945007, 15890014, 31780028]

約数ペア:

[(1, 31780028), (2, 15890014), (4, 7945007), (7, 4540004), (14, 2270002), (28, 1135001), (49, 648572), (98, 324286), (196, 162143)]