21256768

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{881}}^1$

素因数の和:935

約数の個数: 56

約数和(自身を含む): 47045880

約数和(自身を除く): 25789112

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 64, 104, 116, 208, 232, 377, 416, 464, 754, 832, 881, 928, 1508, 1762, 1856, 3016, 3524, 6032, 7048, 11453, 12064, 14096, 22906, 24128, 25549, 28192, 45812, 51098, 56384, 91624, 102196, 183248, 204392, 332137, 366496, 408784, 664274, 732992, 817568, 1328548, 1635136, 2657096, 5314192, 10628384, 21256768]

約数ペア:

[(1, 21256768), (2, 10628384), (4, 5314192), (8, 2657096), (13, 1635136), (16, 1328548), (26, 817568), (29, 732992), (32, 664274), (52, 408784), (58, 366496), (64, 332137), (104, 204392), (116, 183248), (208, 102196), (232, 91624), (377, 56384), (416, 51098), (464, 45812), (754, 28192), (832, 25549), (881, 24128), (928, 22906), (1508, 14096), (1762, 12064), (1856, 11453), (3016, 7048), (3524, 6032)]