19957028

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{503}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 23507932

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 109, 182, 218, 364, 436, 503, 763, 1006, 1417, 1526, 2012, 2834, 3052, 3521, 5668, 6539, 7042, 9919, 13078, 14084, 19838, 26156, 39676, 45773, 54827, 91546, 109654, 183092, 219308, 383789, 712751, 767578, 1425502, 1535156, 2851004, 4989257, 9978514, 19957028]

約数ペア:

[(1, 19957028), (2, 9978514), (4, 4989257), (7, 2851004), (13, 1535156), (14, 1425502), (26, 767578), (28, 712751), (52, 383789), (91, 219308), (109, 183092), (182, 109654), (218, 91546), (364, 54827), (436, 45773), (503, 39676), (763, 26156), (1006, 19838), (1417, 14084), (1526, 13078), (2012, 9919), (2834, 7042), (3052, 6539), (3521, 5668)]