21689564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{757}}^1$

素因数の和:822

約数の個数: 48

約数和(自身を含む): 44570400

約数和(自身を除く): 22880836

約数列:

[1, 2, 4, 13, 19, 26, 29, 38, 52, 58, 76, 116, 247, 377, 494, 551, 754, 757, 988, 1102, 1508, 1514, 2204, 3028, 7163, 9841, 14326, 14383, 19682, 21953, 28652, 28766, 39364, 43906, 57532, 87812, 186979, 285389, 373958, 417107, 570778, 747916, 834214, 1141556, 1668428, 5422391, 10844782, 21689564]

約数ペア:

[(1, 21689564), (2, 10844782), (4, 5422391), (13, 1668428), (19, 1141556), (26, 834214), (29, 747916), (38, 570778), (52, 417107), (58, 373958), (76, 285389), (116, 186979), (247, 87812), (377, 57532), (494, 43906), (551, 39364), (754, 28766), (757, 28652), (988, 21953), (1102, 19682), (1508, 14383), (1514, 14326), (2204, 9841), (3028, 7163)]