128465481640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1\times {\mathrm{142657}}^1$

素因数の和:143194

約数の個数: 64

約数和(自身を含む): 295815628800

約数和(自身を除く): 167350147160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 479, 940, 958, 1880, 1916, 2395, 3832, 4790, 9580, 19160, 22513, 45026, 90052, 112565, 142657, 180104, 225130, 285314, 450260, 570628, 713285, 900520, 1141256, 1426570, 2853140, 5706280, 6704879, 13409758, 26819516, 33524395, 53639032, 67048790, 68332703, 134097580, 136665406, 268195160, 273330812, 341663515, 546661624, 683327030, 1366654060, 2733308120, 3211637041, 6423274082, 12846548164, 16058185205, 25693096328, 32116370410, 64232740820, 128465481640]

約数ペア:

[(1, 128465481640), (2, 64232740820), (4, 32116370410), (5, 25693096328), (8, 16058185205), (10, 12846548164), (20, 6423274082), (40, 3211637041), (47, 2733308120), (94, 1366654060), (188, 683327030), (235, 546661624), (376, 341663515), (470, 273330812), (479, 268195160), (940, 136665406), (958, 134097580), (1880, 68332703), (1916, 67048790), (2395, 53639032), (3832, 33524395), (4790, 26819516), (9580, 13409758), (19160, 6704879), (22513, 5706280), (45026, 2853140), (90052, 1426570), (112565, 1141256), (142657, 900520), (180104, 713285), (225130, 570628), (285314, 450260)]