20104868

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 41664000

約数和(自身を除く): 21559132

約数列:

[1, 2, 4, 7, 14, 28, 61, 79, 122, 149, 158, 244, 298, 316, 427, 553, 596, 854, 1043, 1106, 1708, 2086, 2212, 4172, 4819, 9089, 9638, 11771, 18178, 19276, 23542, 33733, 36356, 47084, 63623, 67466, 82397, 127246, 134932, 164794, 254492, 329588, 718031, 1436062, 2872124, 5026217, 10052434, 20104868]

約数ペア:

[(1, 20104868), (2, 10052434), (4, 5026217), (7, 2872124), (14, 1436062), (28, 718031), (61, 329588), (79, 254492), (122, 164794), (149, 134932), (158, 127246), (244, 82397), (298, 67466), (316, 63623), (427, 47084), (553, 36356), (596, 33733), (854, 23542), (1043, 19276), (1106, 18178), (1708, 11771), (2086, 9638), (2212, 9089), (4172, 4819)]