21796131

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4783}}^1$

素因数の和:4831

約数の個数: 24

約数和(自身を含む): 34904064

約数和(自身を除く): 13107933

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 4783, 14349, 33481, 100443, 148273, 234367, 444819, 703101, 1037911, 3113733, 7265377, 21796131]

約数ペア:

[(1, 21796131), (3, 7265377), (7, 3113733), (21, 1037911), (31, 703101), (49, 444819), (93, 234367), (147, 148273), (217, 100443), (651, 33481), (1519, 14349), (4557, 4783)]