128429455

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 205470720

約数和(自身を除く): 77041265

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 97, 133, 181, 209, 385, 485, 665, 679, 905, 1045, 1067, 1267, 1463, 1843, 1991, 3395, 3439, 5335, 6335, 7315, 7469, 9215, 9955, 12901, 13937, 17195, 17557, 20273, 24073, 37345, 37829, 64505, 69685, 87785, 101365, 120365, 122899, 141911, 189145, 193127, 264803, 333583, 614495, 709555, 965635, 1324015, 1351889, 1667915, 2335081, 3669413, 6759445, 11675405, 18347065, 25685891, 128429455]

約数ペア:

[(1, 128429455), (5, 25685891), (7, 18347065), (11, 11675405), (19, 6759445), (35, 3669413), (55, 2335081), (77, 1667915), (95, 1351889), (97, 1324015), (133, 965635), (181, 709555), (209, 614495), (385, 333583), (485, 264803), (665, 193127), (679, 189145), (905, 141911), (1045, 122899), (1067, 120365), (1267, 101365), (1463, 87785), (1843, 69685), (1991, 64505), (3395, 37829), (3439, 37345), (5335, 24073), (6335, 20273), (7315, 17557), (7469, 17195), (9215, 13937), (9955, 12901)]