21959025

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{619}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 40592640

約数和(自身を除く): 18633615

約数列:

[1, 3, 5, 11, 15, 25, 33, 43, 55, 75, 129, 165, 215, 275, 473, 619, 645, 825, 1075, 1419, 1857, 2365, 3095, 3225, 6809, 7095, 9285, 11825, 15475, 20427, 26617, 34045, 35475, 46425, 79851, 102135, 133085, 170225, 292787, 399255, 510675, 665425, 878361, 1463935, 1996275, 4391805, 7319675, 21959025]

約数ペア:

[(1, 21959025), (3, 7319675), (5, 4391805), (11, 1996275), (15, 1463935), (25, 878361), (33, 665425), (43, 510675), (55, 399255), (75, 292787), (129, 170225), (165, 133085), (215, 102135), (275, 79851), (473, 46425), (619, 35475), (645, 34045), (825, 26617), (1075, 20427), (1419, 15475), (1857, 11825), (2365, 9285), (3095, 7095), (3225, 6809)]