18064520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8521}}^1$

素因数の和:8585

約数の個数: 32

約数和(自身を含む): 41416920

約数和(自身を除く): 23352400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 8521, 17042, 34084, 42605, 68168, 85210, 170420, 340840, 451613, 903226, 1806452, 2258065, 3612904, 4516130, 9032260, 18064520]

約数ペア:

[(1, 18064520), (2, 9032260), (4, 4516130), (5, 3612904), (8, 2258065), (10, 1806452), (20, 903226), (40, 451613), (53, 340840), (106, 170420), (212, 85210), (265, 68168), (424, 42605), (530, 34084), (1060, 17042), (2120, 8521)]