1997904055

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{641}}^1$

素因数の和:824

約数の個数: 64

約数和(自身を含む): 2982988800

約数和(自身を除く): 985084745

約数列:

[1, 5, 7, 19, 35, 43, 95, 109, 133, 215, 301, 545, 641, 665, 763, 817, 1505, 2071, 3205, 3815, 4085, 4487, 4687, 5719, 10355, 12179, 14497, 22435, 23435, 27563, 28595, 32809, 60895, 69869, 72485, 85253, 89053, 137815, 164045, 192941, 349345, 426265, 445265, 489083, 523697, 623371, 964705, 1327511, 2445415, 2618485, 3004367, 3116855, 3665879, 6637555, 9292577, 15021835, 18329395, 21030569, 46462885, 57082973, 105152845, 285414865, 399580811, 1997904055]

約数ペア:

[(1, 1997904055), (5, 399580811), (7, 285414865), (19, 105152845), (35, 57082973), (43, 46462885), (95, 21030569), (109, 18329395), (133, 15021835), (215, 9292577), (301, 6637555), (545, 3665879), (641, 3116855), (665, 3004367), (763, 2618485), (817, 2445415), (1505, 1327511), (2071, 964705), (3205, 623371), (3815, 523697), (4085, 489083), (4487, 445265), (4687, 426265), (5719, 349345), (10355, 192941), (12179, 164045), (14497, 137815), (22435, 89053), (23435, 85253), (27563, 72485), (28595, 69869), (32809, 60895)]