21741111

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 38787840

約数和(自身を除く): 17046729

約数列:

[1, 3, 7, 9, 19, 21, 41, 57, 63, 123, 133, 171, 287, 369, 399, 443, 779, 861, 1197, 1329, 2337, 2583, 3101, 3987, 5453, 7011, 8417, 9303, 16359, 18163, 25251, 27909, 49077, 54489, 58919, 75753, 127141, 163467, 176757, 345097, 381423, 530271, 1035291, 1144269, 2415679, 3105873, 7247037, 21741111]

約数ペア:

[(1, 21741111), (3, 7247037), (7, 3105873), (9, 2415679), (19, 1144269), (21, 1035291), (41, 530271), (57, 381423), (63, 345097), (123, 176757), (133, 163467), (171, 127141), (287, 75753), (369, 58919), (399, 54489), (443, 49077), (779, 27909), (861, 25251), (1197, 18163), (1329, 16359), (2337, 9303), (2583, 8417), (3101, 7011), (3987, 5453)]