19954208

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1$

素因数の和:345

約数の個数: 48

約数和(自身を含む): 41023584

約数和(自身を除く): 21069376

約数列:

[1, 2, 4, 8, 16, 32, 41, 67, 82, 134, 164, 227, 268, 328, 454, 536, 656, 908, 1072, 1312, 1816, 2144, 2747, 3632, 5494, 7264, 9307, 10988, 15209, 18614, 21976, 30418, 37228, 43952, 60836, 74456, 87904, 121672, 148912, 243344, 297824, 486688, 623569, 1247138, 2494276, 4988552, 9977104, 19954208]

約数ペア:

[(1, 19954208), (2, 9977104), (4, 4988552), (8, 2494276), (16, 1247138), (32, 623569), (41, 486688), (67, 297824), (82, 243344), (134, 148912), (164, 121672), (227, 87904), (268, 74456), (328, 60836), (454, 43952), (536, 37228), (656, 30418), (908, 21976), (1072, 18614), (1312, 15209), (1816, 10988), (2144, 9307), (2747, 7264), (3632, 5494)]