20707808

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:771

約数の個数: 48

約数和(自身を含む): 45042480

約数和(自身を除く): 24334672

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 89, 176, 178, 352, 356, 661, 712, 979, 1322, 1424, 1958, 2644, 2848, 3916, 5288, 7271, 7832, 10576, 14542, 15664, 21152, 29084, 31328, 58168, 58829, 116336, 117658, 232672, 235316, 470632, 647119, 941264, 1294238, 1882528, 2588476, 5176952, 10353904, 20707808]

約数ペア:

[(1, 20707808), (2, 10353904), (4, 5176952), (8, 2588476), (11, 1882528), (16, 1294238), (22, 941264), (32, 647119), (44, 470632), (88, 235316), (89, 232672), (176, 117658), (178, 116336), (352, 58829), (356, 58168), (661, 31328), (712, 29084), (979, 21152), (1322, 15664), (1424, 14542), (1958, 10576), (2644, 7832), (2848, 7271), (3916, 5288)]