21480718

素因数分解:

$2^1\times 7^3\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 38001600

約数和(自身を除く): 16520882

約数列:

[1, 2, 7, 14, 49, 98, 173, 181, 343, 346, 362, 686, 1211, 1267, 2422, 2534, 8477, 8869, 16954, 17738, 31313, 59339, 62083, 62626, 118678, 124166, 219191, 438382, 1534337, 3068674, 10740359, 21480718]

約数ペア:

[(1, 21480718), (2, 10740359), (7, 3068674), (14, 1534337), (49, 438382), (98, 219191), (173, 124166), (181, 118678), (343, 62626), (346, 62083), (362, 59339), (686, 31313), (1211, 17738), (1267, 16954), (2422, 8869), (2534, 8477)]