19776825

素因数分解:

$3^3\times 5^2\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:455

約数の個数: 48

約数和(自身を含む): 36872640

約数和(自身を除く): 17095815

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 83, 135, 225, 249, 353, 415, 675, 747, 1059, 1245, 1765, 2075, 2241, 3177, 3735, 5295, 6225, 8825, 9531, 11205, 15885, 18675, 26475, 29299, 47655, 56025, 79425, 87897, 146495, 238275, 263691, 439485, 732475, 791073, 1318455, 2197425, 3955365, 6592275, 19776825]

約数ペア:

[(1, 19776825), (3, 6592275), (5, 3955365), (9, 2197425), (15, 1318455), (25, 791073), (27, 732475), (45, 439485), (75, 263691), (83, 238275), (135, 146495), (225, 87897), (249, 79425), (353, 56025), (415, 47655), (675, 29299), (747, 26475), (1059, 18675), (1245, 15885), (1765, 11205), (2075, 9531), (2241, 8825), (3177, 6225), (3735, 5295)]