20440.000000

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1$

素因数の和:81

約数の個数: 48

約数和(自身を含む): 1547280

約数和(自身を除く): 893562

約数列:

[1, 2, 3, 6, 13, 17, 26, 29, 34, 39, 51, 58, 78, 87, 102, 174, 221, 289, 377, 442, 493, 578, 663, 754, 867, 986, 1131, 1326, 1479, 1734, 2262, 2958, 3757, 6409, 7514, 8381, 11271, 12818, 16762, 19227, 22542, 25143, 38454, 50286, 108953, 217906, 326859, 653718]

約数ペア:

[(1, 653718), (2, 326859), (3, 217906), (6, 108953), (13, 50286), (17, 38454), (26, 25143), (29, 22542), (34, 19227), (39, 16762), (51, 12818), (58, 11271), (78, 8381), (87, 7514), (102, 6409), (174, 3757), (221, 2958), (289, 2262), (377, 1734), (442, 1479), (493, 1326), (578, 1131), (663, 986), (754, 867)]