20454944

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1979}}^1$

素因数の和:2025

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 24451456

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 68, 76, 136, 152, 272, 304, 323, 544, 608, 646, 1292, 1979, 2584, 3958, 5168, 7916, 10336, 15832, 31664, 33643, 37601, 63328, 67286, 75202, 134572, 150404, 269144, 300808, 538288, 601616, 639217, 1076576, 1203232, 1278434, 2556868, 5113736, 10227472, 20454944]

約数ペア:

[(1, 20454944), (2, 10227472), (4, 5113736), (8, 2556868), (16, 1278434), (17, 1203232), (19, 1076576), (32, 639217), (34, 601616), (38, 538288), (68, 300808), (76, 269144), (136, 150404), (152, 134572), (272, 75202), (304, 67286), (323, 63328), (544, 37601), (608, 33643), (646, 31664), (1292, 15832), (1979, 10336), (2584, 7916), (3958, 5168)]