20807728

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{337}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 43001712

約数和(自身を除く): 22193984

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 227, 272, 337, 454, 674, 908, 1348, 1816, 2696, 3632, 3859, 5392, 5729, 7718, 11458, 15436, 22916, 30872, 45832, 61744, 76499, 91664, 152998, 305996, 611992, 1223984, 1300483, 2600966, 5201932, 10403864, 20807728]

約数ペア:

[(1, 20807728), (2, 10403864), (4, 5201932), (8, 2600966), (16, 1300483), (17, 1223984), (34, 611992), (68, 305996), (136, 152998), (227, 91664), (272, 76499), (337, 61744), (454, 45832), (674, 30872), (908, 22916), (1348, 15436), (1816, 11458), (2696, 7718), (3632, 5729), (3859, 5392)]