21553378

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{809}}^1$

素因数の和:1002

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 19037342

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 173, 346, 809, 1211, 1618, 1903, 2422, 3806, 5663, 8899, 11326, 13321, 17798, 26642, 62293, 124586, 139957, 279914, 979699, 1539527, 1959398, 3079054, 10776689, 21553378]

約数ペア:

[(1, 21553378), (2, 10776689), (7, 3079054), (11, 1959398), (14, 1539527), (22, 979699), (77, 279914), (154, 139957), (173, 124586), (346, 62293), (809, 26642), (1211, 17798), (1618, 13321), (1903, 11326), (2422, 8899), (3806, 5663)]