20373705

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 39087360

約数和(自身を除く): 18713655

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 79, 99, 165, 237, 395, 495, 521, 711, 869, 1185, 1563, 2605, 2607, 3555, 4345, 4689, 5731, 7815, 7821, 13035, 17193, 23445, 28655, 39105, 41159, 51579, 85965, 123477, 205795, 257895, 370431, 452749, 617385, 1358247, 1852155, 2263745, 4074741, 6791235, 20373705]

約数ペア:

[(1, 20373705), (3, 6791235), (5, 4074741), (9, 2263745), (11, 1852155), (15, 1358247), (33, 617385), (45, 452749), (55, 370431), (79, 257895), (99, 205795), (165, 123477), (237, 85965), (395, 51579), (495, 41159), (521, 39105), (711, 28655), (869, 23445), (1185, 17193), (1563, 13035), (2605, 7821), (2607, 7815), (3555, 5731), (4345, 4689)]