261036360020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1\times {\mathrm{685963}}^1$

素因数の和:686384

約数の個数: 48

約数和(自身を含む): 560075886720

約数和(自身を除く): 299039526700

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 359, 530, 718, 1060, 1436, 1795, 3590, 7180, 19027, 38054, 76108, 95135, 190270, 380540, 685963, 1371926, 2743852, 3429815, 6859630, 13719260, 36356039, 72712078, 145424156, 181780195, 246260717, 363560390, 492521434, 727120780, 985042868, 1231303585, 2462607170, 4925214340, 13051818001, 26103636002, 52207272004, 65259090005, 130518180010, 261036360020]

約数ペア:

[(1, 261036360020), (2, 130518180010), (4, 65259090005), (5, 52207272004), (10, 26103636002), (20, 13051818001), (53, 4925214340), (106, 2462607170), (212, 1231303585), (265, 985042868), (359, 727120780), (530, 492521434), (718, 363560390), (1060, 246260717), (1436, 181780195), (1795, 145424156), (3590, 72712078), (7180, 36356039), (19027, 13719260), (38054, 6859630), (76108, 3429815), (95135, 2743852), (190270, 1371926), (380540, 685963)]