100020400

素因数分解:

$2^4\times 5^2\times {\mathrm{250051}}^1$

素因数の和:250069

約数の個数: 30

約数和(自身を含む): 240299972

約数和(自身を除く): 140279572

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 250051, 500102, 1000204, 1250255, 2000408, 2500510, 4000816, 5001020, 6251275, 10002040, 12502550, 20004080, 25005100, 50010200, 100020400]

約数ペア:

[(1, 100020400), (2, 50010200), (4, 25005100), (5, 20004080), (8, 12502550), (10, 10002040), (16, 6251275), (20, 5001020), (25, 4000816), (40, 2500510), (50, 2000408), (80, 1250255), (100, 1000204), (200, 500102), (400, 250051)]