21395992

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{271}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 41126400

約数和(自身を除く): 19730408

約数列:

[1, 2, 4, 8, 71, 139, 142, 271, 278, 284, 542, 556, 568, 1084, 1112, 2168, 9869, 19241, 19738, 37669, 38482, 39476, 75338, 76964, 78952, 150676, 153928, 301352, 2674499, 5348998, 10697996, 21395992]

約数ペア:

[(1, 21395992), (2, 10697996), (4, 5348998), (8, 2674499), (71, 301352), (139, 153928), (142, 150676), (271, 78952), (278, 76964), (284, 75338), (542, 39476), (556, 38482), (568, 37669), (1084, 19738), (1112, 19241), (2168, 9869)]