21641120

素因数分解:

$2^5\times 5^1\times {\mathrm{135257}}^1$

素因数の和:135272

約数の個数: 24

約数和(自身を含む): 51127524

約数和(自身を除く): 29486404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135257, 270514, 541028, 676285, 1082056, 1352570, 2164112, 2705140, 4328224, 5410280, 10820560, 21641120]

約数ペア:

[(1, 21641120), (2, 10820560), (4, 5410280), (5, 4328224), (8, 2705140), (10, 2164112), (16, 1352570), (20, 1082056), (32, 676285), (40, 541028), (80, 270514), (160, 135257)]