19975364

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{349}}^2$

素因数の和:743

約数の個数: 18

約数和(自身を含む): 35912394

約数和(自身を除く): 15937030

約数列:

[1, 2, 4, 41, 82, 164, 349, 698, 1396, 14309, 28618, 57236, 121801, 243602, 487204, 4993841, 9987682, 19975364]

約数ペア:

[(1, 19975364), (2, 9987682), (4, 4993841), (41, 487204), (82, 243602), (164, 121801), (349, 57236), (698, 28618), (1396, 14309)]