21101208

素因数分解:

$2^3\times 3^1\times {\mathrm{53}}^2\times {\mathrm{313}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 53938920

約数和(自身を除く): 32837712

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 53, 106, 159, 212, 313, 318, 424, 626, 636, 939, 1252, 1272, 1878, 2504, 2809, 3756, 5618, 7512, 8427, 11236, 16589, 16854, 22472, 33178, 33708, 49767, 66356, 67416, 99534, 132712, 199068, 398136, 879217, 1758434, 2637651, 3516868, 5275302, 7033736, 10550604, 21101208]

約数ペア:

[(1, 21101208), (2, 10550604), (3, 7033736), (4, 5275302), (6, 3516868), (8, 2637651), (12, 1758434), (24, 879217), (53, 398136), (106, 199068), (159, 132712), (212, 99534), (313, 67416), (318, 66356), (424, 49767), (626, 33708), (636, 33178), (939, 22472), (1252, 16854), (1272, 16589), (1878, 11236), (2504, 8427), (2809, 7512), (3756, 5618)]