20497376

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{919}}^1$

素因数の和:987

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 23320384

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 41, 68, 82, 136, 164, 272, 328, 544, 656, 697, 919, 1312, 1394, 1838, 2788, 3676, 5576, 7352, 11152, 14704, 15623, 22304, 29408, 31246, 37679, 62492, 75358, 124984, 150716, 249968, 301432, 499936, 602864, 640543, 1205728, 1281086, 2562172, 5124344, 10248688, 20497376]

約数ペア:

[(1, 20497376), (2, 10248688), (4, 5124344), (8, 2562172), (16, 1281086), (17, 1205728), (32, 640543), (34, 602864), (41, 499936), (68, 301432), (82, 249968), (136, 150716), (164, 124984), (272, 75358), (328, 62492), (544, 37679), (656, 31246), (697, 29408), (919, 22304), (1312, 15623), (1394, 14704), (1838, 11152), (2788, 7352), (3676, 5576)]