18989236

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{167}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 39739392

約数和(自身を除く): 20750156

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 131, 167, 217, 262, 334, 434, 524, 668, 868, 917, 1169, 1834, 2338, 3668, 4061, 4676, 5177, 8122, 10354, 16244, 20708, 21877, 28427, 36239, 43754, 56854, 72478, 87508, 113708, 144956, 153139, 306278, 612556, 678187, 1356374, 2712748, 4747309, 9494618, 18989236]

約数ペア:

[(1, 18989236), (2, 9494618), (4, 4747309), (7, 2712748), (14, 1356374), (28, 678187), (31, 612556), (62, 306278), (124, 153139), (131, 144956), (167, 113708), (217, 87508), (262, 72478), (334, 56854), (434, 43754), (524, 36239), (668, 28427), (868, 21877), (917, 20708), (1169, 16244), (1834, 10354), (2338, 8122), (3668, 5177), (4061, 4676)]