21298072

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{613}}^1$

素因数の和:763

約数の個数: 32

約数和(自身を含む): 41334480

約数和(自身を除く): 20036408

約数列:

[1, 2, 4, 8, 43, 86, 101, 172, 202, 344, 404, 613, 808, 1226, 2452, 4343, 4904, 8686, 17372, 26359, 34744, 52718, 61913, 105436, 123826, 210872, 247652, 495304, 2662259, 5324518, 10649036, 21298072]

約数ペア:

[(1, 21298072), (2, 10649036), (4, 5324518), (8, 2662259), (43, 495304), (86, 247652), (101, 210872), (172, 123826), (202, 105436), (344, 61913), (404, 52718), (613, 34744), (808, 26359), (1226, 17372), (2452, 8686), (4343, 4904)]