280485790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{113557}}^1$

素因数の和:113596

約数の個数: 32

約数和(自身を含む): 572332320

約数和(自身を除く): 291846530

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 113557, 227114, 567785, 1135570, 1476241, 2157583, 2952482, 4315166, 7381205, 10787915, 14762410, 21575830, 28048579, 56097158, 140242895, 280485790]

約数ペア:

[(1, 280485790), (2, 140242895), (5, 56097158), (10, 28048579), (13, 21575830), (19, 14762410), (26, 10787915), (38, 7381205), (65, 4315166), (95, 2952482), (130, 2157583), (190, 1476241), (247, 1135570), (494, 567785), (1235, 227114), (2470, 113557)]