21063728

素因数分解:

$2^4\times 7^2\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:490

約数の個数: 60

約数和(自身を含む): 48302712

約数和(自身を除く): 27238984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 67, 98, 112, 134, 196, 268, 392, 401, 469, 536, 784, 802, 938, 1072, 1604, 1876, 2807, 3208, 3283, 3752, 5614, 6416, 6566, 7504, 11228, 13132, 19649, 22456, 26264, 26867, 39298, 44912, 52528, 53734, 78596, 107468, 157192, 188069, 214936, 314384, 376138, 429872, 752276, 1316483, 1504552, 2632966, 3009104, 5265932, 10531864, 21063728]

約数ペア:

[(1, 21063728), (2, 10531864), (4, 5265932), (7, 3009104), (8, 2632966), (14, 1504552), (16, 1316483), (28, 752276), (49, 429872), (56, 376138), (67, 314384), (98, 214936), (112, 188069), (134, 157192), (196, 107468), (268, 78596), (392, 53734), (401, 52528), (469, 44912), (536, 39298), (784, 26867), (802, 26264), (938, 22456), (1072, 19649), (1604, 13132), (1876, 11228), (2807, 7504), (3208, 6566), (3283, 6416), (3752, 5614)]