21242608

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69877}}^1$

素因数の和:69904

約数の個数: 20

約数和(自身を含む): 43324360

約数和(自身を除く): 22081752

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69877, 139754, 279508, 559016, 1118032, 1327663, 2655326, 5310652, 10621304, 21242608]

約数ペア:

[(1, 21242608), (2, 10621304), (4, 5310652), (8, 2655326), (16, 1327663), (19, 1118032), (38, 559016), (76, 279508), (152, 139754), (304, 69877)]