21262276

素因数分解:

$2^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1307}}^1$

素因数の和:1408

約数の個数: 36

約数和(自身を含む): 43838928

約数和(自身を除く): 22576652

約数列:

[1, 2, 4, 7, 14, 28, 49, 83, 98, 166, 196, 332, 581, 1162, 1307, 2324, 2614, 4067, 5228, 8134, 9149, 16268, 18298, 36596, 64043, 108481, 128086, 216962, 256172, 433924, 759367, 1518734, 3037468, 5315569, 10631138, 21262276]

約数ペア:

[(1, 21262276), (2, 10631138), (4, 5315569), (7, 3037468), (14, 1518734), (28, 759367), (49, 433924), (83, 256172), (98, 216962), (166, 128086), (196, 108481), (332, 64043), (581, 36596), (1162, 18298), (1307, 16268), (2324, 9149), (2614, 8134), (4067, 5228)]