18979982721

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{1217}}^1$

素因数の和:1396

約数の個数: 128

約数和(自身を含む): 34984857600

約数和(自身を除く): 16004874879

約数列:

[1, 3, 7, 9, 19, 21, 27, 43, 57, 63, 101, 129, 133, 171, 189, 301, 303, 387, 399, 513, 707, 817, 903, 909, 1161, 1197, 1217, 1919, 2121, 2451, 2709, 2727, 3591, 3651, 4343, 5719, 5757, 6363, 7353, 8127, 8519, 10953, 13029, 13433, 17157, 17271, 19089, 22059, 23123, 25557, 30401, 32859, 39087, 40299, 51471, 51813, 52331, 69369, 76671, 82517, 91203, 117261, 120897, 122917, 154413, 156993, 161861, 208107, 230013, 247551, 273609, 362691, 366317, 368751, 470979, 485583, 577619, 624321, 742653, 820827, 860419, 994289, 1098951, 1106253, 1412937, 1456749, 1732857, 2227959, 2335423, 2581257, 2982867, 3296853, 3318759, 4370247, 5198571, 5285431, 6960023, 7006269, 7743771, 8948601, 9890559, 15595713, 15856293, 16347961, 20880069, 21018807, 23231313, 26845803, 36998017, 47568879, 49043883, 62640207, 63056421, 100423189, 110994051, 142706637, 147131649, 187920621, 301269567, 332982153, 441394947, 702962323, 903808701, 998946459, 2108886969, 2711426103, 6326660907, 18979982721]

約数ペア:

[(1, 18979982721), (3, 6326660907), (7, 2711426103), (9, 2108886969), (19, 998946459), (21, 903808701), (27, 702962323), (43, 441394947), (57, 332982153), (63, 301269567), (101, 187920621), (129, 147131649), (133, 142706637), (171, 110994051), (189, 100423189), (301, 63056421), (303, 62640207), (387, 49043883), (399, 47568879), (513, 36998017), (707, 26845803), (817, 23231313), (903, 21018807), (909, 20880069), (1161, 16347961), (1197, 15856293), (1217, 15595713), (1919, 9890559), (2121, 8948601), (2451, 7743771), (2709, 7006269), (2727, 6960023), (3591, 5285431), (3651, 5198571), (4343, 4370247), (5719, 3318759), (5757, 3296853), (6363, 2982867), (7353, 2581257), (8127, 2335423), (8519, 2227959), (10953, 1732857), (13029, 1456749), (13433, 1412937), (17157, 1106253), (17271, 1098951), (19089, 994289), (22059, 860419), (23123, 820827), (25557, 742653), (30401, 624321), (32859, 577619), (39087, 485583), (40299, 470979), (51471, 368751), (51813, 366317), (52331, 362691), (69369, 273609), (76671, 247551), (82517, 230013), (91203, 208107), (117261, 161861), (120897, 156993), (122917, 154413)]