21028136

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{3739}}^1$

素因数の和:3801

約数の個数: 32

約数和(自身を含む): 42636000

約数和(自身を除く): 21607864

約数列:

[1, 2, 4, 8, 19, 37, 38, 74, 76, 148, 152, 296, 703, 1406, 2812, 3739, 5624, 7478, 14956, 29912, 71041, 138343, 142082, 276686, 284164, 553372, 568328, 1106744, 2628517, 5257034, 10514068, 21028136]

約数ペア:

[(1, 21028136), (2, 10514068), (4, 5257034), (8, 2628517), (19, 1106744), (37, 568328), (38, 553372), (74, 284164), (76, 276686), (148, 142082), (152, 138343), (296, 71041), (703, 29912), (1406, 14956), (2812, 7478), (3739, 5624)]