20982962

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 43352064

約数和(自身を除く): 22369102

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 47, 77, 91, 94, 143, 154, 182, 223, 286, 329, 446, 517, 611, 658, 1001, 1034, 1222, 1561, 2002, 2453, 2899, 3122, 3619, 4277, 4906, 5798, 6721, 7238, 8554, 10481, 13442, 17171, 20293, 20962, 31889, 34342, 40586, 47047, 63778, 73367, 94094, 115291, 136253, 146734, 223223, 230582, 272506, 446446, 807037, 953771, 1498783, 1614074, 1907542, 2997566, 10491481, 20982962]

約数ペア:

[(1, 20982962), (2, 10491481), (7, 2997566), (11, 1907542), (13, 1614074), (14, 1498783), (22, 953771), (26, 807037), (47, 446446), (77, 272506), (91, 230582), (94, 223223), (143, 146734), (154, 136253), (182, 115291), (223, 94094), (286, 73367), (329, 63778), (446, 47047), (517, 40586), (611, 34342), (658, 31889), (1001, 20962), (1034, 20293), (1222, 17171), (1561, 13442), (2002, 10481), (2453, 8554), (2899, 7238), (3122, 6721), (3619, 5798), (4277, 4906)]