20512960180

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1091}}^1\times {\mathrm{3469}}^1$

素因数の和:4840

約数の個数: 48

約数和(自身を含む): 43288277760

約数和(自身を除く): 22775317580

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1091, 1355, 2182, 2710, 3469, 4364, 5420, 5455, 6938, 10910, 13876, 17345, 21820, 34690, 69380, 295661, 591322, 940099, 1182644, 1478305, 1880198, 2956610, 3760396, 3784679, 4700495, 5913220, 7569358, 9400990, 15138716, 18801980, 18923395, 37846790, 75693580, 1025648009, 2051296018, 4102592036, 5128240045, 10256480090, 20512960180]

約数ペア:

[(1, 20512960180), (2, 10256480090), (4, 5128240045), (5, 4102592036), (10, 2051296018), (20, 1025648009), (271, 75693580), (542, 37846790), (1084, 18923395), (1091, 18801980), (1355, 15138716), (2182, 9400990), (2710, 7569358), (3469, 5913220), (4364, 4700495), (5420, 3784679), (5455, 3760396), (6938, 2956610), (10910, 1880198), (13876, 1478305), (17345, 1182644), (21820, 940099), (34690, 591322), (69380, 295661)]