21860216

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{9521}}^1$

素因数の和:9575

約数の個数: 32

約数和(自身を含む): 47990880

約数和(自身を除く): 26130664

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 164, 287, 328, 574, 1148, 2296, 9521, 19042, 38084, 66647, 76168, 133294, 266588, 390361, 533176, 780722, 1561444, 2732527, 3122888, 5465054, 10930108, 21860216]

約数ペア:

[(1, 21860216), (2, 10930108), (4, 5465054), (7, 3122888), (8, 2732527), (14, 1561444), (28, 780722), (41, 533176), (56, 390361), (82, 266588), (164, 133294), (287, 76168), (328, 66647), (574, 38084), (1148, 19042), (2296, 9521)]