20477985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1571}}^1$

素因数の和:1669

約数の個数: 32

約数和(自身を含む): 36218880

約数和(自身を除く): 15740895

約数列:

[1, 3, 5, 11, 15, 33, 55, 79, 165, 237, 395, 869, 1185, 1571, 2607, 4345, 4713, 7855, 13035, 17281, 23565, 51843, 86405, 124109, 259215, 372327, 620545, 1365199, 1861635, 4095597, 6825995, 20477985]

約数ペア:

[(1, 20477985), (3, 6825995), (5, 4095597), (11, 1861635), (15, 1365199), (33, 620545), (55, 372327), (79, 259215), (165, 124109), (237, 86405), (395, 51843), (869, 23565), (1185, 17281), (1571, 13035), (2607, 7855), (4345, 4713)]