21557704

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20261}}^1$

素因数の和:20293

約数の個数: 32

約数和(自身を含む): 48628800

約数和(自身を除く): 27071096

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20261, 40522, 81044, 141827, 162088, 283654, 384959, 567308, 769918, 1134616, 1539836, 2694713, 3079672, 5389426, 10778852, 21557704]

約数ペア:

[(1, 21557704), (2, 10778852), (4, 5389426), (7, 3079672), (8, 2694713), (14, 1539836), (19, 1134616), (28, 769918), (38, 567308), (56, 384959), (76, 283654), (133, 162088), (152, 141827), (266, 81044), (532, 40522), (1064, 20261)]