18977816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 42729120

約数和(自身を除く): 23751304

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 53, 88, 104, 106, 143, 212, 286, 313, 424, 572, 583, 626, 689, 1144, 1166, 1252, 1378, 2332, 2504, 2756, 3443, 4069, 4664, 5512, 6886, 7579, 8138, 13772, 15158, 16276, 16589, 27544, 30316, 32552, 33178, 44759, 60632, 66356, 89518, 132712, 179036, 182479, 215657, 358072, 364958, 431314, 729916, 862628, 1459832, 1725256, 2372227, 4744454, 9488908, 18977816]

約数ペア:

[(1, 18977816), (2, 9488908), (4, 4744454), (8, 2372227), (11, 1725256), (13, 1459832), (22, 862628), (26, 729916), (44, 431314), (52, 364958), (53, 358072), (88, 215657), (104, 182479), (106, 179036), (143, 132712), (212, 89518), (286, 66356), (313, 60632), (424, 44759), (572, 33178), (583, 32552), (626, 30316), (689, 27544), (1144, 16589), (1166, 16276), (1252, 15158), (1378, 13772), (2332, 8138), (2504, 7579), (2756, 6886), (3443, 5512), (4069, 4664)]