20985085

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 29299968

約数和(自身を除く): 8314883

約数列:

[1, 5, 11, 23, 53, 55, 115, 253, 265, 313, 583, 1219, 1265, 1565, 2915, 3443, 6095, 7199, 13409, 16589, 17215, 35995, 67045, 79189, 82945, 182479, 381547, 395945, 912395, 1907735, 4197017, 20985085]

約数ペア:

[(1, 20985085), (5, 4197017), (11, 1907735), (23, 912395), (53, 395945), (55, 381547), (115, 182479), (253, 82945), (265, 79189), (313, 67045), (583, 35995), (1219, 17215), (1265, 16589), (1565, 13409), (2915, 7199), (3443, 6095)]