20016854

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 19174186

約数列:

[1, 2, 11, 13, 17, 22, 23, 26, 34, 46, 143, 179, 187, 221, 253, 286, 299, 358, 374, 391, 442, 506, 598, 782, 1969, 2327, 2431, 3043, 3289, 3938, 4117, 4301, 4654, 4862, 5083, 6086, 6578, 8234, 8602, 10166, 25597, 33473, 39559, 45287, 51194, 53521, 55913, 66946, 69989, 79118, 90574, 107042, 111826, 139978, 435149, 588731, 769879, 870298, 909857, 1177462, 1539758, 1819714, 10008427, 20016854]

約数ペア:

[(1, 20016854), (2, 10008427), (11, 1819714), (13, 1539758), (17, 1177462), (22, 909857), (23, 870298), (26, 769879), (34, 588731), (46, 435149), (143, 139978), (179, 111826), (187, 107042), (221, 90574), (253, 79118), (286, 69989), (299, 66946), (358, 55913), (374, 53521), (391, 51194), (442, 45287), (506, 39559), (598, 33473), (782, 25597), (1969, 10166), (2327, 8602), (2431, 8234), (3043, 6578), (3289, 6086), (3938, 5083), (4117, 4862), (4301, 4654)]