80667280

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4219}}^1$

素因数の和:4471

約数の個数: 40

約数和(自身を含む): 188380800

約数和(自身を除く): 107713520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 1195, 1912, 2390, 3824, 4219, 4780, 8438, 9560, 16876, 19120, 21095, 33752, 42190, 67504, 84380, 168760, 337520, 1008341, 2016682, 4033364, 5041705, 8066728, 10083410, 16133456, 20166820, 40333640, 80667280]

約数ペア:

[(1, 80667280), (2, 40333640), (4, 20166820), (5, 16133456), (8, 10083410), (10, 8066728), (16, 5041705), (20, 4033364), (40, 2016682), (80, 1008341), (239, 337520), (478, 168760), (956, 84380), (1195, 67504), (1912, 42190), (2390, 33752), (3824, 21095), (4219, 19120), (4780, 16876), (8438, 9560)]