20721512

素因数分解:

$2^3\times 7^2\times {\mathrm{52861}}^1$

素因数の和:52881

約数の個数: 24

約数和(自身を含む): 45197010

約数和(自身を除く): 24475498

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 52861, 105722, 211444, 370027, 422888, 740054, 1480108, 2590189, 2960216, 5180378, 10360756, 20721512]

約数ペア:

[(1, 20721512), (2, 10360756), (4, 5180378), (7, 2960216), (8, 2590189), (14, 1480108), (28, 740054), (49, 422888), (56, 370027), (98, 211444), (196, 105722), (392, 52861)]