18913832

素因数分解:

$2^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^2$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 41722080

約数和(自身を除く): 22808248

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 67, 71, 134, 142, 268, 284, 469, 497, 536, 568, 938, 994, 1876, 1988, 3752, 3976, 4757, 5041, 9514, 10082, 19028, 20164, 33299, 35287, 38056, 40328, 66598, 70574, 133196, 141148, 266392, 282296, 337747, 675494, 1350988, 2364229, 2701976, 4728458, 9456916, 18913832]

約数ペア:

[(1, 18913832), (2, 9456916), (4, 4728458), (7, 2701976), (8, 2364229), (14, 1350988), (28, 675494), (56, 337747), (67, 282296), (71, 266392), (134, 141148), (142, 133196), (268, 70574), (284, 66598), (469, 40328), (497, 38056), (536, 35287), (568, 33299), (938, 20164), (994, 19028), (1876, 10082), (1988, 9514), (3752, 5041), (3976, 4757)]