20201207985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{720571}}^1$

素因数の和:720678

約数の個数: 48

約数和(自身を含む): 40467323520

約数和(自身を除く): 20266115535

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 89, 105, 267, 315, 445, 623, 801, 1335, 1869, 3115, 4005, 5607, 9345, 28035, 720571, 2161713, 3602855, 5043997, 6485139, 10808565, 15131991, 25219985, 32425695, 45395973, 64130819, 75659955, 192392457, 226979865, 320654095, 448915733, 577177371, 961962285, 1346747199, 2244578665, 2885886855, 4040241597, 6733735995, 20201207985]

約数ペア:

[(1, 20201207985), (3, 6733735995), (5, 4040241597), (7, 2885886855), (9, 2244578665), (15, 1346747199), (21, 961962285), (35, 577177371), (45, 448915733), (63, 320654095), (89, 226979865), (105, 192392457), (267, 75659955), (315, 64130819), (445, 45395973), (623, 32425695), (801, 25219985), (1335, 15131991), (1869, 10808565), (3115, 6485139), (4005, 5043997), (5607, 3602855), (9345, 2161713), (28035, 720571)]