20904701480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40201349}}^1$

素因数の和:40201373

約数の個数: 32

約数和(自身を含む): 50653701000

約数和(自身を除く): 29748999520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40201349, 80402698, 160805396, 201006745, 321610792, 402013490, 522617537, 804026980, 1045235074, 1608053960, 2090470148, 2613087685, 4180940296, 5226175370, 10452350740, 20904701480]

約数ペア:

[(1, 20904701480), (2, 10452350740), (4, 5226175370), (5, 4180940296), (8, 2613087685), (10, 2090470148), (13, 1608053960), (20, 1045235074), (26, 804026980), (40, 522617537), (52, 402013490), (65, 321610792), (104, 201006745), (130, 160805396), (260, 80402698), (520, 40201349)]