20643735

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{467}}^1$

素因数の和:903

約数の個数: 32

約数和(自身を含む): 37919232

約数和(自身を除く): 17275497

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 421, 467, 1263, 1401, 2105, 2335, 2947, 3269, 6315, 7005, 8841, 9807, 14735, 16345, 44205, 49035, 196607, 589821, 983035, 1376249, 2949105, 4128747, 6881245, 20643735]

約数ペア:

[(1, 20643735), (3, 6881245), (5, 4128747), (7, 2949105), (15, 1376249), (21, 983035), (35, 589821), (105, 196607), (421, 49035), (467, 44205), (1263, 16345), (1401, 14735), (2105, 9807), (2335, 8841), (2947, 7005), (3269, 6315)]