19494020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10711}}^1$

素因数の和:10740

約数の個数: 48

約数和(自身を含む): 50389248

約数和(自身を除く): 30895228

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10711, 21422, 42844, 53555, 74977, 107110, 139243, 149954, 214220, 278486, 299908, 374885, 556972, 696215, 749770, 974701, 1392430, 1499540, 1949402, 2784860, 3898804, 4873505, 9747010, 19494020]

約数ペア:

[(1, 19494020), (2, 9747010), (4, 4873505), (5, 3898804), (7, 2784860), (10, 1949402), (13, 1499540), (14, 1392430), (20, 974701), (26, 749770), (28, 696215), (35, 556972), (52, 374885), (65, 299908), (70, 278486), (91, 214220), (130, 149954), (140, 139243), (182, 107110), (260, 74977), (364, 53555), (455, 42844), (910, 21422), (1820, 10711)]