18810920

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7019}}^1$

素因数の和:7097

約数の個数: 32

約数和(自身を含む): 42962400

約数和(自身を除く): 24151480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7019, 14038, 28076, 35095, 56152, 70190, 140380, 280760, 470273, 940546, 1881092, 2351365, 3762184, 4702730, 9405460, 18810920]

約数ペア:

[(1, 18810920), (2, 9405460), (4, 4702730), (5, 3762184), (8, 2351365), (10, 1881092), (20, 940546), (40, 470273), (67, 280760), (134, 140380), (268, 70190), (335, 56152), (536, 35095), (670, 28076), (1340, 14038), (2680, 7019)]