21038388

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1187}}^1$

素因数の和:1412

約数の個数: 48

約数和(自身を含む): 56415744

約数和(自身を除く): 35377356

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 211, 422, 633, 844, 1187, 1266, 1477, 2374, 2532, 2954, 3561, 4431, 4748, 5908, 7122, 8309, 8862, 14244, 16618, 17724, 24927, 33236, 49854, 99708, 250457, 500914, 751371, 1001828, 1502742, 1753199, 3005484, 3506398, 5259597, 7012796, 10519194, 21038388]

約数ペア:

[(1, 21038388), (2, 10519194), (3, 7012796), (4, 5259597), (6, 3506398), (7, 3005484), (12, 1753199), (14, 1502742), (21, 1001828), (28, 751371), (42, 500914), (84, 250457), (211, 99708), (422, 49854), (633, 33236), (844, 24927), (1187, 17724), (1266, 16618), (1477, 14244), (2374, 8862), (2532, 8309), (2954, 7122), (3561, 5908), (4431, 4748)]