20378505

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{461}}^1$

素因数の和:897

約数の個数: 32

約数和(自身を含む): 37433088

約数和(自身を除く): 17054583

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 421, 461, 1263, 1383, 2105, 2305, 2947, 3227, 6315, 6915, 8841, 9681, 14735, 16135, 44205, 48405, 194081, 582243, 970405, 1358567, 2911215, 4075701, 6792835, 20378505]

約数ペア:

[(1, 20378505), (3, 6792835), (5, 4075701), (7, 2911215), (15, 1358567), (21, 970405), (35, 582243), (105, 194081), (421, 48405), (461, 44205), (1263, 16135), (1383, 14735), (2105, 9681), (2305, 8841), (2947, 6915), (3227, 6315)]