18040420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{13463}}^1$

素因数の和:13539

約数の個数: 24

約数和(自身を含む): 38453184

約数和(自身を除く): 20412764

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 13463, 26926, 53852, 67315, 134630, 269260, 902021, 1804042, 3608084, 4510105, 9020210, 18040420]

約数ペア:

[(1, 18040420), (2, 9020210), (4, 4510105), (5, 3608084), (10, 1804042), (20, 902021), (67, 269260), (134, 134630), (268, 67315), (335, 53852), (670, 26926), (1340, 13463)]