20537685

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:335

約数の個数: 64

約数和(自身を含む): 42332160

約数和(自身を除く): 21794475

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 103, 105, 135, 189, 211, 309, 315, 515, 633, 721, 927, 945, 1055, 1477, 1545, 1899, 2163, 2781, 3165, 3605, 4431, 4635, 5697, 6489, 7385, 9495, 10815, 13293, 13905, 19467, 21733, 22155, 28485, 32445, 39879, 65199, 66465, 97335, 108665, 152131, 195597, 199395, 325995, 456393, 586791, 760655, 977985, 1369179, 2281965, 2933955, 4107537, 6845895, 20537685]

約数ペア:

[(1, 20537685), (3, 6845895), (5, 4107537), (7, 2933955), (9, 2281965), (15, 1369179), (21, 977985), (27, 760655), (35, 586791), (45, 456393), (63, 325995), (103, 199395), (105, 195597), (135, 152131), (189, 108665), (211, 97335), (309, 66465), (315, 65199), (515, 39879), (633, 32445), (721, 28485), (927, 22155), (945, 21733), (1055, 19467), (1477, 13905), (1545, 13293), (1899, 10815), (2163, 9495), (2781, 7385), (3165, 6489), (3605, 5697), (4431, 4635)]