21753081

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1069}}^1$

素因数の和:1118

約数の個数: 48

約数和(自身を含む): 40060800

約数和(自身を除く): 18307719

約数列:

[1, 3, 7, 9, 17, 19, 21, 51, 57, 63, 119, 133, 153, 171, 323, 357, 399, 969, 1069, 1071, 1197, 2261, 2907, 3207, 6783, 7483, 9621, 18173, 20311, 20349, 22449, 54519, 60933, 67347, 127211, 142177, 163557, 182799, 345287, 381633, 426531, 1035861, 1144899, 1279593, 2417009, 3107583, 7251027, 21753081]

約数ペア:

[(1, 21753081), (3, 7251027), (7, 3107583), (9, 2417009), (17, 1279593), (19, 1144899), (21, 1035861), (51, 426531), (57, 381633), (63, 345287), (119, 182799), (133, 163557), (153, 142177), (171, 127211), (323, 67347), (357, 60933), (399, 54519), (969, 22449), (1069, 20349), (1071, 20311), (1197, 18173), (2261, 9621), (2907, 7483), (3207, 6783)]