21120946

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 42301440

約数和(自身を除く): 21180494

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 67, 77, 89, 134, 154, 161, 178, 253, 322, 469, 506, 623, 737, 938, 979, 1246, 1474, 1541, 1771, 1958, 2047, 3082, 3542, 4094, 5159, 5963, 6853, 10318, 10787, 11926, 13706, 14329, 16951, 21574, 22517, 28658, 33902, 41741, 45034, 65593, 83482, 118657, 131186, 137149, 157619, 237314, 274298, 315238, 459151, 918302, 960043, 1508639, 1920086, 3017278, 10560473, 21120946]

約数ペア:

[(1, 21120946), (2, 10560473), (7, 3017278), (11, 1920086), (14, 1508639), (22, 960043), (23, 918302), (46, 459151), (67, 315238), (77, 274298), (89, 237314), (134, 157619), (154, 137149), (161, 131186), (178, 118657), (253, 83482), (322, 65593), (469, 45034), (506, 41741), (623, 33902), (737, 28658), (938, 22517), (979, 21574), (1246, 16951), (1474, 14329), (1541, 13706), (1771, 11926), (1958, 10787), (2047, 10318), (3082, 6853), (3542, 5963), (4094, 5159)]