21971404

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8623}}^1$

素因数の和:8654

約数の個数: 36

約数和(自身を含む): 48173664

約数和(自身を除く): 26202260

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8623, 17246, 34492, 60361, 112099, 120722, 224198, 241444, 422527, 448396, 784693, 845054, 1569386, 1690108, 3138772, 5492851, 10985702, 21971404]

約数ペア:

[(1, 21971404), (2, 10985702), (4, 5492851), (7, 3138772), (13, 1690108), (14, 1569386), (26, 845054), (28, 784693), (49, 448396), (52, 422527), (91, 241444), (98, 224198), (182, 120722), (196, 112099), (364, 60361), (637, 34492), (1274, 17246), (2548, 8623)]