21123193

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{643}}^1$

素因数の和:701

約数の個数: 24

約数和(自身を含む): 27480768

約数和(自身を除く): 6357575

約数列:

[1, 7, 13, 19, 91, 133, 247, 361, 643, 1729, 2527, 4501, 4693, 8359, 12217, 32851, 58513, 85519, 158821, 232123, 1111747, 1624861, 3017599, 21123193]

約数ペア:

[(1, 21123193), (7, 3017599), (13, 1624861), (19, 1111747), (91, 232123), (133, 158821), (247, 85519), (361, 58513), (643, 32851), (1729, 12217), (2527, 8359), (4501, 4693)]