21457072

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14737}}^1$

素因数の和:14765

約数の個数: 40

約数和(自身を含む): 51170336

約数和(自身を除く): 29713264

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14737, 29474, 58948, 103159, 117896, 191581, 206318, 235792, 383162, 412636, 766324, 825272, 1341067, 1532648, 1650544, 2682134, 3065296, 5364268, 10728536, 21457072]

約数ペア:

[(1, 21457072), (2, 10728536), (4, 5364268), (7, 3065296), (8, 2682134), (13, 1650544), (14, 1532648), (16, 1341067), (26, 825272), (28, 766324), (52, 412636), (56, 383162), (91, 235792), (104, 206318), (112, 191581), (182, 117896), (208, 103159), (364, 58948), (728, 29474), (1456, 14737)]