21262984

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{547}}^1$

素因数の和:709

約数の個数: 32

約数和(自身を含む): 41231520

約数和(自身を除く): 19968536

約数列:

[1, 2, 4, 8, 43, 86, 113, 172, 226, 344, 452, 547, 904, 1094, 2188, 4376, 4859, 9718, 19436, 23521, 38872, 47042, 61811, 94084, 123622, 188168, 247244, 494488, 2657873, 5315746, 10631492, 21262984]

約数ペア:

[(1, 21262984), (2, 10631492), (4, 5315746), (8, 2657873), (43, 494488), (86, 247244), (113, 188168), (172, 123622), (226, 94084), (344, 61811), (452, 47042), (547, 38872), (904, 23521), (1094, 19436), (2188, 9718), (4376, 4859)]