21033513

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:283

約数の個数: 40

約数和(自身を含む): 33686400

約数和(自身を除く): 12652887

約数列:

[1, 3, 9, 19, 27, 57, 79, 81, 171, 173, 237, 513, 519, 711, 1501, 1539, 1557, 2133, 3287, 4503, 4671, 6399, 9861, 13509, 13667, 14013, 29583, 40527, 41001, 88749, 121581, 123003, 259673, 266247, 369009, 779019, 1107027, 2337057, 7011171, 21033513]

約数ペア:

[(1, 21033513), (3, 7011171), (9, 2337057), (19, 1107027), (27, 779019), (57, 369009), (79, 266247), (81, 259673), (171, 123003), (173, 121581), (237, 88749), (513, 41001), (519, 40527), (711, 29583), (1501, 14013), (1539, 13667), (1557, 13509), (2133, 9861), (3287, 6399), (4503, 4671)]