20217490975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{116881}}^1$

素因数の和:116956

約数の個数: 48

約数和(自身を含む): 29740391136

約数和(自身を除く): 9522900161

約数列:

[1, 5, 11, 17, 25, 37, 55, 85, 185, 187, 275, 407, 425, 629, 925, 935, 2035, 3145, 4675, 6919, 10175, 15725, 34595, 116881, 172975, 584405, 1285691, 1986977, 2922025, 4324597, 6428455, 9934885, 21622985, 21856747, 32142275, 47570567, 49674425, 73518149, 108114925, 109283735, 237852835, 367590745, 546418675, 808699639, 1189264175, 1837953725, 4043498195, 20217490975]

約数ペア:

[(1, 20217490975), (5, 4043498195), (11, 1837953725), (17, 1189264175), (25, 808699639), (37, 546418675), (55, 367590745), (85, 237852835), (185, 109283735), (187, 108114925), (275, 73518149), (407, 49674425), (425, 47570567), (629, 32142275), (925, 21856747), (935, 21622985), (2035, 9934885), (3145, 6428455), (4675, 4324597), (6919, 2922025), (10175, 1986977), (15725, 1285691), (34595, 584405), (116881, 172975)]