20617328

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{331}}^1$

素因数の和:585

約数の個数: 40

約数和(自身を含む): 42608880

約数和(自身を除く): 21991552

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 229, 272, 331, 458, 662, 916, 1324, 1832, 2648, 3664, 3893, 5296, 5627, 7786, 11254, 15572, 22508, 31144, 45016, 62288, 75799, 90032, 151598, 303196, 606392, 1212784, 1288583, 2577166, 5154332, 10308664, 20617328]

約数ペア:

[(1, 20617328), (2, 10308664), (4, 5154332), (8, 2577166), (16, 1288583), (17, 1212784), (34, 606392), (68, 303196), (136, 151598), (229, 90032), (272, 75799), (331, 62288), (458, 45016), (662, 31144), (916, 22508), (1324, 15572), (1832, 11254), (2648, 7786), (3664, 5627), (3893, 5296)]