19903324

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 41552896

約数和(自身を除く): 21649572

約数列:

[1, 2, 4, 7, 14, 28, 43, 61, 86, 122, 172, 244, 271, 301, 427, 542, 602, 854, 1084, 1204, 1708, 1897, 2623, 3794, 5246, 7588, 10492, 11653, 16531, 18361, 23306, 33062, 36722, 46612, 66124, 73444, 81571, 115717, 163142, 231434, 326284, 462868, 710833, 1421666, 2843332, 4975831, 9951662, 19903324]

約数ペア:

[(1, 19903324), (2, 9951662), (4, 4975831), (7, 2843332), (14, 1421666), (28, 710833), (43, 462868), (61, 326284), (86, 231434), (122, 163142), (172, 115717), (244, 81571), (271, 73444), (301, 66124), (427, 46612), (542, 36722), (602, 33062), (854, 23306), (1084, 18361), (1204, 16531), (1708, 11653), (1897, 10492), (2623, 7588), (3794, 5246)]