21166940

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{7103}}^1$

素因数の和:7261

約数の個数: 24

約数和(自身を含む): 44755200

約数和(自身を除く): 23588260

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 7103, 14206, 28412, 35515, 71030, 142060, 1058347, 2116694, 4233388, 5291735, 10583470, 21166940]

約数ペア:

[(1, 21166940), (2, 10583470), (4, 5291735), (5, 4233388), (10, 2116694), (20, 1058347), (149, 142060), (298, 71030), (596, 35515), (745, 28412), (1490, 14206), (2980, 7103)]