21979251280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{39248663}}^1$

素因数の和:39248683

約数の個数: 40

約数和(自身を含む): 58402012032

約数和(自身を除く): 36422760752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 39248663, 78497326, 156994652, 196243315, 274740641, 313989304, 392486630, 549481282, 627978608, 784973260, 1098962564, 1373703205, 1569946520, 2197925128, 2747406410, 3139893040, 4395850256, 5494812820, 10989625640, 21979251280]

約数ペア:

[(1, 21979251280), (2, 10989625640), (4, 5494812820), (5, 4395850256), (7, 3139893040), (8, 2747406410), (10, 2197925128), (14, 1569946520), (16, 1373703205), (20, 1098962564), (28, 784973260), (35, 627978608), (40, 549481282), (56, 392486630), (70, 313989304), (80, 274740641), (112, 196243315), (140, 156994652), (280, 78497326), (560, 39248663)]