19959952

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{743}}^1$

素因数の和:847

約数の個数: 40

約数和(自身を含む): 40961664

約数和(自身を除く): 21001712

約数列:

[1, 2, 4, 8, 16, 23, 46, 73, 92, 146, 184, 292, 368, 584, 743, 1168, 1486, 1679, 2972, 3358, 5944, 6716, 11888, 13432, 17089, 26864, 34178, 54239, 68356, 108478, 136712, 216956, 273424, 433912, 867824, 1247497, 2494994, 4989988, 9979976, 19959952]

約数ペア:

[(1, 19959952), (2, 9979976), (4, 4989988), (8, 2494994), (16, 1247497), (23, 867824), (46, 433912), (73, 273424), (92, 216956), (146, 136712), (184, 108478), (292, 68356), (368, 54239), (584, 34178), (743, 26864), (1168, 17089), (1486, 13432), (1679, 11888), (2972, 6716), (3358, 5944)]