69816981

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 102936960

約数和(自身を除く): 33119979

約数列:

[1, 3, 13, 39, 73, 137, 179, 219, 411, 537, 949, 1781, 2327, 2847, 5343, 6981, 10001, 13067, 24523, 30003, 39201, 73569, 130013, 169871, 318799, 390039, 509613, 956397, 1790179, 5370537, 23272327, 69816981]

約数ペア:

[(1, 69816981), (3, 23272327), (13, 5370537), (39, 1790179), (73, 956397), (137, 509613), (179, 390039), (219, 318799), (411, 169871), (537, 130013), (949, 73569), (1781, 39201), (2327, 30003), (2847, 24523), (5343, 13067), (6981, 10001)]