20065780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8431}}^1$

素因数の和:8464

約数の個数: 48

約数和(自身を含む): 50996736

約数和(自身を除く): 30930956

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8431, 16862, 33724, 42155, 59017, 84310, 118034, 143327, 168620, 236068, 286654, 295085, 573308, 590170, 716635, 1003289, 1180340, 1433270, 2006578, 2866540, 4013156, 5016445, 10032890, 20065780]

約数ペア:

[(1, 20065780), (2, 10032890), (4, 5016445), (5, 4013156), (7, 2866540), (10, 2006578), (14, 1433270), (17, 1180340), (20, 1003289), (28, 716635), (34, 590170), (35, 573308), (68, 295085), (70, 286654), (85, 236068), (119, 168620), (140, 143327), (170, 118034), (238, 84310), (340, 59017), (476, 42155), (595, 33724), (1190, 16862), (2380, 8431)]