665472020

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{242873}}^1$

素因数の和:243019

約数の個数: 24

約数和(自身を含む): 1407697704

約数和(自身を除く): 742225684

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 242873, 485746, 971492, 1214365, 2428730, 4857460, 33273601, 66547202, 133094404, 166368005, 332736010, 665472020]

約数ペア:

[(1, 665472020), (2, 332736010), (4, 166368005), (5, 133094404), (10, 66547202), (20, 33273601), (137, 4857460), (274, 2428730), (548, 1214365), (685, 971492), (1370, 485746), (2740, 242873)]