18985876

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1213}}^1$

素因数の和:1280

約数の個数: 48

約数和(自身を含む): 41878144

約数和(自身を除く): 22892268

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 52, 86, 91, 172, 182, 301, 364, 559, 602, 1118, 1204, 1213, 2236, 2426, 3913, 4852, 7826, 8491, 15652, 15769, 16982, 31538, 33964, 52159, 63076, 104318, 110383, 208636, 220766, 365113, 441532, 678067, 730226, 1356134, 1460452, 2712268, 4746469, 9492938, 18985876]

約数ペア:

[(1, 18985876), (2, 9492938), (4, 4746469), (7, 2712268), (13, 1460452), (14, 1356134), (26, 730226), (28, 678067), (43, 441532), (52, 365113), (86, 220766), (91, 208636), (172, 110383), (182, 104318), (301, 63076), (364, 52159), (559, 33964), (602, 31538), (1118, 16982), (1204, 15769), (1213, 15652), (2236, 8491), (2426, 7826), (3913, 4852)]