21120904

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{9199}}^1$

素因数の和:9253

約数の個数: 32

約数和(自身を含む): 46368000

約数和(自身を除く): 25247096

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 164, 287, 328, 574, 1148, 2296, 9199, 18398, 36796, 64393, 73592, 128786, 257572, 377159, 515144, 754318, 1508636, 2640113, 3017272, 5280226, 10560452, 21120904]

約数ペア:

[(1, 21120904), (2, 10560452), (4, 5280226), (7, 3017272), (8, 2640113), (14, 1508636), (28, 754318), (41, 515144), (56, 377159), (82, 257572), (164, 128786), (287, 73592), (328, 64393), (574, 36796), (1148, 18398), (2296, 9199)]