21142136

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{367}}^1\times {\mathrm{379}}^1$

素因数の和:771

約数の個数: 32

約数和(自身を含む): 41952000

約数和(自身を除く): 20809864

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 367, 379, 734, 758, 1468, 1516, 2936, 3032, 6973, 7201, 13946, 14402, 27892, 28804, 55784, 57608, 139093, 278186, 556372, 1112744, 2642767, 5285534, 10571068, 21142136]

約数ペア:

[(1, 21142136), (2, 10571068), (4, 5285534), (8, 2642767), (19, 1112744), (38, 556372), (76, 278186), (152, 139093), (367, 57608), (379, 55784), (734, 28804), (758, 27892), (1468, 14402), (1516, 13946), (2936, 7201), (3032, 6973)]