20403086977

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1973}}^1\times {\mathrm{5981}}^1$

素因数の和:7993

約数の個数: 32

約数和(自身を含む): 26450968320

約数和(自身を除く): 6047881343

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 1973, 5981, 13811, 25649, 37487, 41867, 77753, 113639, 179543, 262409, 487331, 544271, 795473, 1477307, 3411317, 10341149, 11800513, 82603591, 153406669, 224209747, 1073846683, 1569468229, 2914726711, 20403086977]

約数ペア:

[(1, 20403086977), (7, 2914726711), (13, 1569468229), (19, 1073846683), (91, 224209747), (133, 153406669), (247, 82603591), (1729, 11800513), (1973, 10341149), (5981, 3411317), (13811, 1477307), (25649, 795473), (37487, 544271), (41867, 487331), (77753, 262409), (113639, 179543)]