21060765

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 40225536

約数和(自身を除く): 19164771

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 157, 165, 271, 471, 495, 785, 813, 1355, 1413, 1727, 2355, 2439, 2981, 4065, 5181, 7065, 8635, 8943, 12195, 14905, 15543, 25905, 26829, 42547, 44715, 77715, 127641, 134145, 212735, 382923, 468017, 638205, 1404051, 1914615, 2340085, 4212153, 7020255, 21060765]

約数ペア:

[(1, 21060765), (3, 7020255), (5, 4212153), (9, 2340085), (11, 1914615), (15, 1404051), (33, 638205), (45, 468017), (55, 382923), (99, 212735), (157, 134145), (165, 127641), (271, 77715), (471, 44715), (495, 42547), (785, 26829), (813, 25905), (1355, 15543), (1413, 14905), (1727, 12195), (2355, 8943), (2439, 8635), (2981, 7065), (4065, 5181)]