21779368

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 44963100

約数和(自身を除く): 23183732

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 169, 178, 181, 338, 356, 362, 676, 712, 724, 1157, 1352, 1448, 2314, 2353, 4628, 4706, 9256, 9412, 15041, 16109, 18824, 30082, 30589, 32218, 60164, 61178, 64436, 120328, 122356, 128872, 209417, 244712, 418834, 837668, 1675336, 2722421, 5444842, 10889684, 21779368]

約数ペア:

[(1, 21779368), (2, 10889684), (4, 5444842), (8, 2722421), (13, 1675336), (26, 837668), (52, 418834), (89, 244712), (104, 209417), (169, 128872), (178, 122356), (181, 120328), (338, 64436), (356, 61178), (362, 60164), (676, 32218), (712, 30589), (724, 30082), (1157, 18824), (1352, 16109), (1448, 15041), (2314, 9412), (2353, 9256), (4628, 4706)]