21420201

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{269}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 11757399

約数列:

[1, 3, 11, 19, 33, 57, 127, 209, 269, 381, 627, 807, 1397, 2413, 2959, 4191, 5111, 7239, 8877, 15333, 26543, 34163, 56221, 79629, 102489, 168663, 375793, 649097, 1127379, 1947291, 7140067, 21420201]

約数ペア:

[(1, 21420201), (3, 7140067), (11, 1947291), (19, 1127379), (33, 649097), (57, 375793), (127, 168663), (209, 102489), (269, 79629), (381, 56221), (627, 34163), (807, 26543), (1397, 15333), (2413, 8877), (2959, 7239), (4191, 5111)]