18991860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{316531}}^1$

素因数の和:316543

約数の個数: 24

約数和(自身を含む): 53177376

約数和(自身を除く): 34185516

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 316531, 633062, 949593, 1266124, 1582655, 1899186, 3165310, 3798372, 4747965, 6330620, 9495930, 18991860]

約数ペア:

[(1, 18991860), (2, 9495930), (3, 6330620), (4, 4747965), (5, 3798372), (6, 3165310), (10, 1899186), (12, 1582655), (15, 1266124), (20, 949593), (30, 633062), (60, 316531)]