18629990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{45439}}^1$

素因数の和:45487

約数の個数: 16

約数和(自身を含む): 34352640

約数和(自身を除く): 15722650

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 45439, 90878, 227195, 454390, 1862999, 3725998, 9314995, 18629990]

約数ペア:

[(1, 18629990), (2, 9314995), (5, 3725998), (10, 1862999), (41, 454390), (82, 227195), (205, 90878), (410, 45439)]