21116670

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1721}}^1$

素因数の和:2140

約数の個数: 32

約数和(自身を含む): 50833440

約数和(自身を除く): 29716770

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 409, 818, 1227, 1721, 2045, 2454, 3442, 4090, 5163, 6135, 8605, 10326, 12270, 17210, 25815, 51630, 703889, 1407778, 2111667, 3519445, 4223334, 7038890, 10558335, 21116670]

約数ペア:

[(1, 21116670), (2, 10558335), (3, 7038890), (5, 4223334), (6, 3519445), (10, 2111667), (15, 1407778), (30, 703889), (409, 51630), (818, 25815), (1227, 17210), (1721, 12270), (2045, 10326), (2454, 8605), (3442, 6135), (4090, 5163)]