20479264

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2591}}^1$

素因数の和:2633

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 25243616

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2591, 3952, 5182, 7904, 10364, 20728, 33683, 41456, 49229, 67366, 82912, 98458, 134732, 196916, 269464, 393832, 538928, 639977, 787664, 1077856, 1279954, 1575328, 2559908, 5119816, 10239632, 20479264]

約数ペア:

[(1, 20479264), (2, 10239632), (4, 5119816), (8, 2559908), (13, 1575328), (16, 1279954), (19, 1077856), (26, 787664), (32, 639977), (38, 538928), (52, 393832), (76, 269464), (104, 196916), (152, 134732), (208, 98458), (247, 82912), (304, 67366), (416, 49229), (494, 41456), (608, 33683), (988, 20728), (1976, 10364), (2591, 7904), (3952, 5182)]