77628400

素因数分解:

$2^4\times 5^2\times {\mathrm{194071}}^1$

素因数の和:194089

約数の個数: 30

約数和(自身を含む): 186503192

約数和(自身を除く): 108874792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 194071, 388142, 776284, 970355, 1552568, 1940710, 3105136, 3881420, 4851775, 7762840, 9703550, 15525680, 19407100, 38814200, 77628400]

約数ペア:

[(1, 77628400), (2, 38814200), (4, 19407100), (5, 15525680), (8, 9703550), (10, 7762840), (16, 4851775), (20, 3881420), (25, 3105136), (40, 1940710), (50, 1552568), (80, 970355), (100, 776284), (200, 388142), (400, 194071)]