21495663

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{617}}^1$

素因数の和:716

約数の個数: 36

約数和(自身を含む): 36635040

約数和(自身を除く): 15139377

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 553, 617, 711, 1659, 1851, 3871, 4319, 4977, 5553, 11613, 12957, 30233, 34839, 38871, 48743, 90699, 146229, 272097, 341201, 438687, 1023603, 2388407, 3070809, 7165221, 21495663]

約数ペア:

[(1, 21495663), (3, 7165221), (7, 3070809), (9, 2388407), (21, 1023603), (49, 438687), (63, 341201), (79, 272097), (147, 146229), (237, 90699), (441, 48743), (553, 38871), (617, 34839), (711, 30233), (1659, 12957), (1851, 11613), (3871, 5553), (4319, 4977)]