12920840

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1423}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 29220480

約数和(自身を除く): 16299640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1423, 1816, 2270, 2846, 4540, 5692, 7115, 9080, 11384, 14230, 28460, 56920, 323021, 646042, 1292084, 1615105, 2584168, 3230210, 6460420, 12920840]

約数ペア:

[(1, 12920840), (2, 6460420), (4, 3230210), (5, 2584168), (8, 1615105), (10, 1292084), (20, 646042), (40, 323021), (227, 56920), (454, 28460), (908, 14230), (1135, 11384), (1423, 9080), (1816, 7115), (2270, 5692), (2846, 4540)]