21406077

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 43130880

約数和(自身を除く): 21724803

約数列:

[1, 3, 7, 9, 11, 17, 21, 23, 33, 51, 63, 69, 77, 79, 99, 119, 153, 161, 187, 207, 231, 237, 253, 357, 391, 483, 553, 561, 693, 711, 759, 869, 1071, 1173, 1309, 1343, 1449, 1659, 1683, 1771, 1817, 2277, 2607, 2737, 3519, 3927, 4029, 4301, 4977, 5313, 5451, 6083, 7821, 8211, 9401, 11781, 12087, 12719, 12903, 14773, 15939, 16353, 18249, 19987, 24633, 28203, 30107, 30889, 38157, 38709, 44319, 54747, 59961, 84609, 90321, 92667, 103411, 114471, 132957, 139909, 179883, 216223, 270963, 278001, 310233, 339779, 419727, 648669, 930699, 1019337, 1259181, 1946007, 2378453, 3058011, 7135359, 21406077]

約数ペア:

[(1, 21406077), (3, 7135359), (7, 3058011), (9, 2378453), (11, 1946007), (17, 1259181), (21, 1019337), (23, 930699), (33, 648669), (51, 419727), (63, 339779), (69, 310233), (77, 278001), (79, 270963), (99, 216223), (119, 179883), (153, 139909), (161, 132957), (187, 114471), (207, 103411), (231, 92667), (237, 90321), (253, 84609), (357, 59961), (391, 54747), (483, 44319), (553, 38709), (561, 38157), (693, 30889), (711, 30107), (759, 28203), (869, 24633), (1071, 19987), (1173, 18249), (1309, 16353), (1343, 15939), (1449, 14773), (1659, 12903), (1683, 12719), (1771, 12087), (1817, 11781), (2277, 9401), (2607, 8211), (2737, 7821), (3519, 6083), (3927, 5451), (4029, 5313), (4301, 4977)]