21498176

素因数分解:

$2^6\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1021}}^1$

素因数の和:1087

約数の個数: 56

約数和(自身を含む): 49840896

約数和(自身を除く): 28342720

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 188, 224, 329, 376, 448, 658, 752, 1021, 1316, 1504, 2042, 2632, 3008, 4084, 5264, 7147, 8168, 10528, 14294, 16336, 21056, 28588, 32672, 47987, 57176, 65344, 95974, 114352, 191948, 228704, 335909, 383896, 457408, 671818, 767792, 1343636, 1535584, 2687272, 3071168, 5374544, 10749088, 21498176]

約数ペア:

[(1, 21498176), (2, 10749088), (4, 5374544), (7, 3071168), (8, 2687272), (14, 1535584), (16, 1343636), (28, 767792), (32, 671818), (47, 457408), (56, 383896), (64, 335909), (94, 228704), (112, 191948), (188, 114352), (224, 95974), (329, 65344), (376, 57176), (448, 47987), (658, 32672), (752, 28588), (1021, 21056), (1316, 16336), (1504, 14294), (2042, 10528), (2632, 8168), (3008, 7147), (4084, 5264)]