20852055

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1249}}^1$

素因数の和:1320

約数の個数: 48

約数和(自身を含む): 42120000

約数和(自身を除く): 21267945

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 53, 63, 105, 159, 265, 315, 371, 477, 795, 1113, 1249, 1855, 2385, 3339, 3747, 5565, 6245, 8743, 11241, 16695, 18735, 26229, 43715, 56205, 66197, 78687, 131145, 198591, 330985, 393435, 463379, 595773, 992955, 1390137, 2316895, 2978865, 4170411, 6950685, 20852055]

約数ペア:

[(1, 20852055), (3, 6950685), (5, 4170411), (7, 2978865), (9, 2316895), (15, 1390137), (21, 992955), (35, 595773), (45, 463379), (53, 393435), (63, 330985), (105, 198591), (159, 131145), (265, 78687), (315, 66197), (371, 56205), (477, 43715), (795, 26229), (1113, 18735), (1249, 16695), (1855, 11241), (2385, 8743), (3339, 6245), (3747, 5565)]