19993990

素因数分解:

$2^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{8731}}^1$

素因数の和:8967

約数の個数: 16

約数和(自身を含む): 36150480

約数和(自身を除く): 16156490

約数列:

[1, 2, 5, 10, 229, 458, 1145, 2290, 8731, 17462, 43655, 87310, 1999399, 3998798, 9996995, 19993990]

約数ペア:

[(1, 19993990), (2, 9996995), (5, 3998798), (10, 1999399), (229, 87310), (458, 43655), (1145, 17462), (2290, 8731)]