21927717

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 38887680

約数和(自身を除く): 16959963

約数列:

[1, 3, 7, 9, 21, 23, 37, 63, 69, 111, 161, 207, 259, 333, 409, 483, 777, 851, 1227, 1449, 2331, 2553, 2863, 3681, 5957, 7659, 8589, 9407, 15133, 17871, 25767, 28221, 45399, 53613, 65849, 84663, 105931, 136197, 197547, 317793, 348059, 592641, 953379, 1044177, 2436413, 3132531, 7309239, 21927717]

約数ペア:

[(1, 21927717), (3, 7309239), (7, 3132531), (9, 2436413), (21, 1044177), (23, 953379), (37, 592641), (63, 348059), (69, 317793), (111, 197547), (161, 136197), (207, 105931), (259, 84663), (333, 65849), (409, 53613), (483, 45399), (777, 28221), (851, 25767), (1227, 17871), (1449, 15133), (2331, 9407), (2553, 8589), (2863, 7659), (3681, 5957)]