21489328

素因数分解:

$2^4\times 7^1\times {\mathrm{313}}^1\times {\mathrm{613}}^1$

素因数の和:941

約数の個数: 40

約数和(自身を含む): 47813408

約数和(自身を除く): 26324080

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 313, 613, 626, 1226, 1252, 2191, 2452, 2504, 4291, 4382, 4904, 5008, 8582, 8764, 9808, 17164, 17528, 34328, 35056, 68656, 191869, 383738, 767476, 1343083, 1534952, 2686166, 3069904, 5372332, 10744664, 21489328]

約数ペア:

[(1, 21489328), (2, 10744664), (4, 5372332), (7, 3069904), (8, 2686166), (14, 1534952), (16, 1343083), (28, 767476), (56, 383738), (112, 191869), (313, 68656), (613, 35056), (626, 34328), (1226, 17528), (1252, 17164), (2191, 9808), (2452, 8764), (2504, 8582), (4291, 5008), (4382, 4904)]