19915792

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{181}}^1$

素因数の和:248

約数の個数: 60

約数和(自身を含む): 43680364

約数和(自身を除く): 23764572

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 46, 52, 92, 104, 181, 184, 208, 299, 362, 368, 529, 598, 724, 1058, 1196, 1448, 2116, 2353, 2392, 2896, 4163, 4232, 4706, 4784, 6877, 8326, 8464, 9412, 13754, 16652, 18824, 27508, 33304, 37648, 54119, 55016, 66608, 95749, 108238, 110032, 191498, 216476, 382996, 432952, 765992, 865904, 1244737, 1531984, 2489474, 4978948, 9957896, 19915792]

約数ペア:

[(1, 19915792), (2, 9957896), (4, 4978948), (8, 2489474), (13, 1531984), (16, 1244737), (23, 865904), (26, 765992), (46, 432952), (52, 382996), (92, 216476), (104, 191498), (181, 110032), (184, 108238), (208, 95749), (299, 66608), (362, 55016), (368, 54119), (529, 37648), (598, 33304), (724, 27508), (1058, 18824), (1196, 16652), (1448, 13754), (2116, 9412), (2353, 8464), (2392, 8326), (2896, 6877), (4163, 4784), (4232, 4706)]