21147972

素因数分解:

$2^2\times 3^1\times {\mathrm{359}}^1\times {\mathrm{4909}}^1$

素因数の和:5275

約数の個数: 24

約数和(自身を含む): 49492800

約数和(自身を除く): 28344828

約数列:

[1, 2, 3, 4, 6, 12, 359, 718, 1077, 1436, 2154, 4308, 4909, 9818, 14727, 19636, 29454, 58908, 1762331, 3524662, 5286993, 7049324, 10573986, 21147972]

約数ペア:

[(1, 21147972), (2, 10573986), (3, 7049324), (4, 5286993), (6, 3524662), (12, 1762331), (359, 58908), (718, 29454), (1077, 19636), (1436, 14727), (2154, 9818), (4308, 4909)]