21680409088

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{1543}}^1\times {\mathrm{2111}}^1$

素因数の和:3685

約数の個数: 80

約数和(自身を含む): 46703010816

約数和(自身を除く): 25022601728

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1543, 1664, 2111, 3086, 3328, 4222, 6172, 6656, 8444, 12344, 16888, 20059, 24688, 27443, 33776, 40118, 49376, 54886, 67552, 80236, 98752, 109772, 135104, 160472, 197504, 219544, 270208, 320944, 395008, 439088, 540416, 641888, 790016, 878176, 1080832, 1283776, 1756352, 2567552, 3257273, 3512704, 5135104, 6514546, 7025408, 10270208, 13029092, 14050816, 26058184, 42344549, 52116368, 84689098, 104232736, 169378196, 208465472, 338756392, 416930944, 677512784, 833861888, 1355025568, 1667723776, 2710051136, 5420102272, 10840204544, 21680409088]

約数ペア:

[(1, 21680409088), (2, 10840204544), (4, 5420102272), (8, 2710051136), (13, 1667723776), (16, 1355025568), (26, 833861888), (32, 677512784), (52, 416930944), (64, 338756392), (104, 208465472), (128, 169378196), (208, 104232736), (256, 84689098), (416, 52116368), (512, 42344549), (832, 26058184), (1543, 14050816), (1664, 13029092), (2111, 10270208), (3086, 7025408), (3328, 6514546), (4222, 5135104), (6172, 3512704), (6656, 3257273), (8444, 2567552), (12344, 1756352), (16888, 1283776), (20059, 1080832), (24688, 878176), (27443, 790016), (33776, 641888), (40118, 540416), (49376, 439088), (54886, 395008), (67552, 320944), (80236, 270208), (98752, 219544), (109772, 197504), (135104, 160472)]