19445920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9349}}^1$

素因数の和:9377

約数の個数: 48

約数和(自身を含む): 49480200

約数和(自身を除く): 30034280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9349, 18698, 37396, 46745, 74792, 93490, 121537, 149584, 186980, 243074, 299168, 373960, 486148, 607685, 747920, 972296, 1215370, 1495840, 1944592, 2430740, 3889184, 4861480, 9722960, 19445920]

約数ペア:

[(1, 19445920), (2, 9722960), (4, 4861480), (5, 3889184), (8, 2430740), (10, 1944592), (13, 1495840), (16, 1215370), (20, 972296), (26, 747920), (32, 607685), (40, 486148), (52, 373960), (65, 299168), (80, 243074), (104, 186980), (130, 149584), (160, 121537), (208, 93490), (260, 74792), (416, 46745), (520, 37396), (1040, 18698), (2080, 9349)]