21368795

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{569}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 31190400

約数和(自身を除く): 9821605

約数列:

[1, 5, 7, 29, 35, 37, 145, 185, 203, 259, 569, 1015, 1073, 1295, 2845, 3983, 5365, 7511, 16501, 19915, 21053, 37555, 82505, 105265, 115507, 147371, 577535, 610537, 736855, 3052685, 4273759, 21368795]

約数ペア:

[(1, 21368795), (5, 4273759), (7, 3052685), (29, 736855), (35, 610537), (37, 577535), (145, 147371), (185, 115507), (203, 105265), (259, 82505), (569, 37555), (1015, 21053), (1073, 19915), (1295, 16501), (2845, 7511), (3983, 5365)]