20708765

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{149}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 32918400

約数和(自身を除く): 12209635

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 149, 209, 361, 385, 665, 745, 1043, 1045, 1463, 1639, 1805, 2527, 2831, 3971, 5215, 7315, 8195, 11473, 12635, 14155, 19817, 19855, 27797, 31141, 53789, 57365, 99085, 138985, 155705, 217987, 268945, 376523, 591679, 1089935, 1882615, 2958395, 4141753, 20708765]

約数ペア:

[(1, 20708765), (5, 4141753), (7, 2958395), (11, 1882615), (19, 1089935), (35, 591679), (55, 376523), (77, 268945), (95, 217987), (133, 155705), (149, 138985), (209, 99085), (361, 57365), (385, 53789), (665, 31141), (745, 27797), (1043, 19855), (1045, 19817), (1463, 14155), (1639, 12635), (1805, 11473), (2527, 8195), (2831, 7315), (3971, 5215)]