40081405

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{643}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 59721984

約数和(自身を除く): 19640579

約数列:

[1, 5, 7, 13, 35, 65, 91, 137, 455, 643, 685, 959, 1781, 3215, 4501, 4795, 8359, 8905, 12467, 22505, 41795, 58513, 62335, 88091, 292565, 440455, 616637, 1145183, 3083185, 5725915, 8016281, 40081405]

約数ペア:

[(1, 40081405), (5, 8016281), (7, 5725915), (13, 3083185), (35, 1145183), (65, 616637), (91, 440455), (137, 292565), (455, 88091), (643, 62335), (685, 58513), (959, 41795), (1781, 22505), (3215, 12467), (4501, 8905), (4795, 8359)]