21322161

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 37939200

約数和(自身を除く): 16617039

約数列:

[1, 3, 7, 9, 19, 21, 47, 57, 63, 133, 141, 171, 329, 379, 399, 423, 893, 987, 1137, 1197, 2653, 2679, 2961, 3411, 6251, 7201, 7959, 8037, 17813, 18753, 21603, 23877, 50407, 53439, 56259, 64809, 124691, 151221, 160317, 338447, 374073, 453663, 1015341, 1122219, 2369129, 3046023, 7107387, 21322161]

約数ペア:

[(1, 21322161), (3, 7107387), (7, 3046023), (9, 2369129), (19, 1122219), (21, 1015341), (47, 453663), (57, 374073), (63, 338447), (133, 160317), (141, 151221), (171, 124691), (329, 64809), (379, 56259), (399, 53439), (423, 50407), (893, 23877), (987, 21603), (1137, 18753), (1197, 17813), (2653, 8037), (2679, 7959), (2961, 7201), (3411, 6251)]