16821320

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5923}}^1$

素因数の和:6005

約数の個数: 32

約数和(自身を含む): 38387520

約数和(自身を除く): 21566200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 5923, 11846, 23692, 29615, 47384, 59230, 118460, 236920, 420533, 841066, 1682132, 2102665, 3364264, 4205330, 8410660, 16821320]

約数ペア:

[(1, 16821320), (2, 8410660), (4, 4205330), (5, 3364264), (8, 2102665), (10, 1682132), (20, 841066), (40, 420533), (71, 236920), (142, 118460), (284, 59230), (355, 47384), (568, 29615), (710, 23692), (1420, 11846), (2840, 5923)]