27921355

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{347}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 44432640

約数和(自身を除く): 16511285

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 121, 133, 209, 347, 385, 605, 665, 847, 1045, 1463, 1735, 2299, 2429, 3817, 4235, 6593, 7315, 11495, 12145, 16093, 19085, 26719, 32965, 41987, 46151, 72523, 80465, 133595, 209935, 230755, 293909, 362615, 507661, 797753, 1469545, 2538305, 3988765, 5584271, 27921355]

約数ペア:

[(1, 27921355), (5, 5584271), (7, 3988765), (11, 2538305), (19, 1469545), (35, 797753), (55, 507661), (77, 362615), (95, 293909), (121, 230755), (133, 209935), (209, 133595), (347, 80465), (385, 72523), (605, 46151), (665, 41987), (847, 32965), (1045, 26719), (1463, 19085), (1735, 16093), (2299, 12145), (2429, 11495), (3817, 7315), (4235, 6593)]