20452784

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1471}}^1$

素因数の和:1569

約数の個数: 40

約数和(自身を含む): 43806720

約数和(自身を除く): 23353936

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 79, 88, 158, 176, 316, 632, 869, 1264, 1471, 1738, 2942, 3476, 5884, 6952, 11768, 13904, 16181, 23536, 32362, 64724, 116209, 129448, 232418, 258896, 464836, 929672, 1278299, 1859344, 2556598, 5113196, 10226392, 20452784]

約数ペア:

[(1, 20452784), (2, 10226392), (4, 5113196), (8, 2556598), (11, 1859344), (16, 1278299), (22, 929672), (44, 464836), (79, 258896), (88, 232418), (158, 129448), (176, 116209), (316, 64724), (632, 32362), (869, 23536), (1264, 16181), (1471, 13904), (1738, 11768), (2942, 6952), (3476, 5884)]