21800919

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{773}}^1$

素因数の和:879

約数の個数: 32

約数和(自身を含む): 35665920

約数和(自身を除く): 13865001

約数列:

[1, 3, 7, 17, 21, 51, 79, 119, 237, 357, 553, 773, 1343, 1659, 2319, 4029, 5411, 9401, 13141, 16233, 28203, 39423, 61067, 91987, 183201, 275961, 427469, 1038139, 1282407, 3114417, 7266973, 21800919]

約数ペア:

[(1, 21800919), (3, 7266973), (7, 3114417), (17, 1282407), (21, 1038139), (51, 427469), (79, 275961), (119, 183201), (237, 91987), (357, 61067), (553, 39423), (773, 28203), (1343, 16233), (1659, 13141), (2319, 9401), (4029, 5411)]