21236944

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{479}}^1$

素因数の和:667

約数の個数: 40

約数和(自身を含む): 43925760

約数和(自身を除く): 22688816

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 163, 272, 326, 479, 652, 958, 1304, 1916, 2608, 2771, 3832, 5542, 7664, 8143, 11084, 16286, 22168, 32572, 44336, 65144, 78077, 130288, 156154, 312308, 624616, 1249232, 1327309, 2654618, 5309236, 10618472, 21236944]

約数ペア:

[(1, 21236944), (2, 10618472), (4, 5309236), (8, 2654618), (16, 1327309), (17, 1249232), (34, 624616), (68, 312308), (136, 156154), (163, 130288), (272, 78077), (326, 65144), (479, 44336), (652, 32572), (958, 22168), (1304, 16286), (1916, 11084), (2608, 8143), (2771, 7664), (3832, 5542)]