20707365

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^2$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 39222144

約数和(自身を除く): 18514779

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 61, 105, 159, 183, 265, 305, 371, 427, 795, 915, 1113, 1281, 1855, 2135, 3233, 3721, 5565, 6405, 9699, 11163, 16165, 18605, 22631, 26047, 48495, 55815, 67893, 78141, 113155, 130235, 197213, 339465, 390705, 591639, 986065, 1380491, 2958195, 4141473, 6902455, 20707365]

約数ペア:

[(1, 20707365), (3, 6902455), (5, 4141473), (7, 2958195), (15, 1380491), (21, 986065), (35, 591639), (53, 390705), (61, 339465), (105, 197213), (159, 130235), (183, 113155), (265, 78141), (305, 67893), (371, 55815), (427, 48495), (795, 26047), (915, 22631), (1113, 18605), (1281, 16165), (1855, 11163), (2135, 9699), (3233, 6405), (3721, 5565)]