21668820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{883}}^1$

素因数の和:1304

約数の個数: 48

約数和(自身を含む): 60889920

約数和(自身を除く): 39221100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 409, 818, 883, 1227, 1636, 1766, 2045, 2454, 2649, 3532, 4090, 4415, 4908, 5298, 6135, 8180, 8830, 10596, 12270, 13245, 17660, 24540, 26490, 52980, 361147, 722294, 1083441, 1444588, 1805735, 2166882, 3611470, 4333764, 5417205, 7222940, 10834410, 21668820]

約数ペア:

[(1, 21668820), (2, 10834410), (3, 7222940), (4, 5417205), (5, 4333764), (6, 3611470), (10, 2166882), (12, 1805735), (15, 1444588), (20, 1083441), (30, 722294), (60, 361147), (409, 52980), (818, 26490), (883, 24540), (1227, 17660), (1636, 13245), (1766, 12270), (2045, 10596), (2454, 8830), (2649, 8180), (3532, 6135), (4090, 5298), (4415, 4908)]