201721005

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1801}}^1$

素因数の和:1962

約数の個数: 48

約数和(自身を含む): 371067840

約数和(自身を除く): 169346835

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 131, 171, 285, 393, 655, 855, 1179, 1801, 1965, 2489, 5403, 5895, 7467, 9005, 12445, 16209, 22401, 27015, 34219, 37335, 81045, 102657, 112005, 171095, 235931, 307971, 513285, 707793, 1179655, 1539855, 2123379, 3538965, 4482689, 10616895, 13448067, 22413445, 40344201, 67240335, 201721005]

約数ペア:

[(1, 201721005), (3, 67240335), (5, 40344201), (9, 22413445), (15, 13448067), (19, 10616895), (45, 4482689), (57, 3538965), (95, 2123379), (131, 1539855), (171, 1179655), (285, 707793), (393, 513285), (655, 307971), (855, 235931), (1179, 171095), (1801, 112005), (1965, 102657), (2489, 81045), (5403, 37335), (5895, 34219), (7467, 27015), (9005, 22401), (12445, 16209)]