20511248

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1033}}^1$

素因数の和:1131

約数の個数: 40

約数和(自身を含む): 42695928

約数和(自身を除く): 22184680

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 73, 136, 146, 272, 292, 584, 1033, 1168, 1241, 2066, 2482, 4132, 4964, 8264, 9928, 16528, 17561, 19856, 35122, 70244, 75409, 140488, 150818, 280976, 301636, 603272, 1206544, 1281953, 2563906, 5127812, 10255624, 20511248]

約数ペア:

[(1, 20511248), (2, 10255624), (4, 5127812), (8, 2563906), (16, 1281953), (17, 1206544), (34, 603272), (68, 301636), (73, 280976), (136, 150818), (146, 140488), (272, 75409), (292, 70244), (584, 35122), (1033, 19856), (1168, 17561), (1241, 16528), (2066, 9928), (2482, 8264), (4132, 4964)]