21302216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{797}}^1$

素因数の和:1073

約数の個数: 32

約数和(自身を含む): 43235640

約数和(自身を除く): 21933424

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 257, 514, 797, 1028, 1594, 2056, 3188, 3341, 6376, 6682, 10361, 13364, 20722, 26728, 41444, 82888, 204829, 409658, 819316, 1638632, 2662777, 5325554, 10651108, 21302216]

約数ペア:

[(1, 21302216), (2, 10651108), (4, 5325554), (8, 2662777), (13, 1638632), (26, 819316), (52, 409658), (104, 204829), (257, 82888), (514, 41444), (797, 26728), (1028, 20722), (1594, 13364), (2056, 10361), (3188, 6682), (3341, 6376)]