215415711

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{547}}^1$

素因数の和:633

約数の個数: 72

約数和(自身を含む): 389825280

約数和(自身を除く): 174409569

約数列:

[1, 3, 7, 9, 19, 21, 47, 49, 57, 63, 133, 141, 147, 171, 329, 399, 423, 441, 547, 893, 931, 987, 1197, 1641, 2303, 2679, 2793, 2961, 3829, 4923, 6251, 6909, 8037, 8379, 10393, 11487, 18753, 20727, 25709, 26803, 31179, 34461, 43757, 56259, 72751, 77127, 80409, 93537, 131271, 179963, 218253, 231381, 241227, 393813, 488471, 509257, 539889, 654759, 1259741, 1465413, 1527771, 1619667, 3419297, 3779223, 4396239, 4583313, 10257891, 11337669, 23935079, 30773673, 71805237, 215415711]

約数ペア:

[(1, 215415711), (3, 71805237), (7, 30773673), (9, 23935079), (19, 11337669), (21, 10257891), (47, 4583313), (49, 4396239), (57, 3779223), (63, 3419297), (133, 1619667), (141, 1527771), (147, 1465413), (171, 1259741), (329, 654759), (399, 539889), (423, 509257), (441, 488471), (547, 393813), (893, 241227), (931, 231381), (987, 218253), (1197, 179963), (1641, 131271), (2303, 93537), (2679, 80409), (2793, 77127), (2961, 72751), (3829, 56259), (4923, 43757), (6251, 34461), (6909, 31179), (8037, 26803), (8379, 25709), (10393, 20727), (11487, 18753)]