201991280

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7817}}^1$

素因数の和:7866

約数の個数: 80

約数和(自身を含む): 523493280

約数和(自身を除く): 321502000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 1292, 1360, 1520, 1615, 2584, 3230, 5168, 6460, 7817, 12920, 15634, 25840, 31268, 39085, 62536, 78170, 125072, 132889, 148523, 156340, 265778, 297046, 312680, 531556, 594092, 625360, 664445, 742615, 1063112, 1188184, 1328890, 1485230, 2126224, 2376368, 2524891, 2657780, 2970460, 5049782, 5315560, 5940920, 10099564, 10631120, 11881840, 12624455, 20199128, 25248910, 40398256, 50497820, 100995640, 201991280]

約数ペア:

[(1, 201991280), (2, 100995640), (4, 50497820), (5, 40398256), (8, 25248910), (10, 20199128), (16, 12624455), (17, 11881840), (19, 10631120), (20, 10099564), (34, 5940920), (38, 5315560), (40, 5049782), (68, 2970460), (76, 2657780), (80, 2524891), (85, 2376368), (95, 2126224), (136, 1485230), (152, 1328890), (170, 1188184), (190, 1063112), (272, 742615), (304, 664445), (323, 625360), (340, 594092), (380, 531556), (646, 312680), (680, 297046), (760, 265778), (1292, 156340), (1360, 148523), (1520, 132889), (1615, 125072), (2584, 78170), (3230, 62536), (5168, 39085), (6460, 31268), (7817, 25840), (12920, 15634)]