21976784

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1879}}^1$

素因数の和:1947

約数の個数: 40

約数和(自身を含む): 46157760

約数和(自身を除く): 24180976

約数列:

[1, 2, 4, 8, 16, 17, 34, 43, 68, 86, 136, 172, 272, 344, 688, 731, 1462, 1879, 2924, 3758, 5848, 7516, 11696, 15032, 30064, 31943, 63886, 80797, 127772, 161594, 255544, 323188, 511088, 646376, 1292752, 1373549, 2747098, 5494196, 10988392, 21976784]

約数ペア:

[(1, 21976784), (2, 10988392), (4, 5494196), (8, 2747098), (16, 1373549), (17, 1292752), (34, 646376), (43, 511088), (68, 323188), (86, 255544), (136, 161594), (172, 127772), (272, 80797), (344, 63886), (688, 31943), (731, 30064), (1462, 15032), (1879, 11696), (2924, 7516), (3758, 5848)]