20978608

素因数分解:

$2^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2371}}^1$

素因数の和:2465

約数の個数: 40

約数和(自身を含む): 47060480

約数和(自身を除く): 26081872

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 79, 112, 158, 316, 553, 632, 1106, 1264, 2212, 2371, 4424, 4742, 8848, 9484, 16597, 18968, 33194, 37936, 66388, 132776, 187309, 265552, 374618, 749236, 1311163, 1498472, 2622326, 2996944, 5244652, 10489304, 20978608]

約数ペア:

[(1, 20978608), (2, 10489304), (4, 5244652), (7, 2996944), (8, 2622326), (14, 1498472), (16, 1311163), (28, 749236), (56, 374618), (79, 265552), (112, 187309), (158, 132776), (316, 66388), (553, 37936), (632, 33194), (1106, 18968), (1264, 16597), (2212, 9484), (2371, 8848), (4424, 4742)]