21509310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1753}}^1$

素因数の和:2172

約数の個数: 32

約数和(自身を含む): 51778080

約数和(自身を除く): 30268770

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 409, 818, 1227, 1753, 2045, 2454, 3506, 4090, 5259, 6135, 8765, 10518, 12270, 17530, 26295, 52590, 716977, 1433954, 2150931, 3584885, 4301862, 7169770, 10754655, 21509310]

約数ペア:

[(1, 21509310), (2, 10754655), (3, 7169770), (5, 4301862), (6, 3584885), (10, 2150931), (15, 1433954), (30, 716977), (409, 52590), (818, 26295), (1227, 17530), (1753, 12270), (2045, 10518), (2454, 8765), (3506, 6135), (4090, 5259)]