21791812

素因数分解:

$2^2\times 7^1\times {\mathrm{659}}^1\times {\mathrm{1181}}^1$

素因数の和:1851

約数の個数: 24

約数和(自身を含む): 43686720

約数和(自身を除く): 21894908

約数列:

[1, 2, 4, 7, 14, 28, 659, 1181, 1318, 2362, 2636, 4613, 4724, 8267, 9226, 16534, 18452, 33068, 778279, 1556558, 3113116, 5447953, 10895906, 21791812]

約数ペア:

[(1, 21791812), (2, 10895906), (4, 5447953), (7, 3113116), (14, 1556558), (28, 778279), (659, 33068), (1181, 18452), (1318, 16534), (2362, 9226), (2636, 8267), (4613, 4724)]