21196624

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:523

約数の個数: 40

約数和(自身を含む): 42640128

約数和(自身を除く): 21443504

約数列:

[1, 2, 4, 8, 16, 47, 71, 94, 142, 188, 284, 376, 397, 568, 752, 794, 1136, 1588, 3176, 3337, 6352, 6674, 13348, 18659, 26696, 28187, 37318, 53392, 56374, 74636, 112748, 149272, 225496, 298544, 450992, 1324789, 2649578, 5299156, 10598312, 21196624]

約数ペア:

[(1, 21196624), (2, 10598312), (4, 5299156), (8, 2649578), (16, 1324789), (47, 450992), (71, 298544), (94, 225496), (142, 149272), (188, 112748), (284, 74636), (376, 56374), (397, 53392), (568, 37318), (752, 28187), (794, 26696), (1136, 18659), (1588, 13348), (3176, 6674), (3337, 6352)]