21840412

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{4639}}^1$

素因数の和:4761

約数の個数: 24

約数和(自身を含む): 42094080

約数和(自身を除く): 20253668

約数列:

[1, 2, 4, 11, 22, 44, 107, 214, 428, 1177, 2354, 4639, 4708, 9278, 18556, 51029, 102058, 204116, 496373, 992746, 1985492, 5460103, 10920206, 21840412]

約数ペア:

[(1, 21840412), (2, 10920206), (4, 5460103), (11, 1985492), (22, 992746), (44, 496373), (107, 204116), (214, 102058), (428, 51029), (1177, 18556), (2354, 9278), (4639, 4708)]