80039600

素因数分解:

$2^4\times 5^2\times {\mathrm{401}}^1\times {\mathrm{499}}^1$

素因数の和:918

約数の個数: 60

約数和(自身を含む): 193161000

約数和(自身を除く): 113121400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 401, 499, 802, 998, 1604, 1996, 2005, 2495, 3208, 3992, 4010, 4990, 6416, 7984, 8020, 9980, 10025, 12475, 16040, 19960, 20050, 24950, 32080, 39920, 40100, 49900, 80200, 99800, 160400, 199600, 200099, 400198, 800396, 1000495, 1600792, 2000990, 3201584, 4001980, 5002475, 8003960, 10004950, 16007920, 20009900, 40019800, 80039600]

約数ペア:

[(1, 80039600), (2, 40019800), (4, 20009900), (5, 16007920), (8, 10004950), (10, 8003960), (16, 5002475), (20, 4001980), (25, 3201584), (40, 2000990), (50, 1600792), (80, 1000495), (100, 800396), (200, 400198), (400, 200099), (401, 199600), (499, 160400), (802, 99800), (998, 80200), (1604, 49900), (1996, 40100), (2005, 39920), (2495, 32080), (3208, 24950), (3992, 20050), (4010, 19960), (4990, 16040), (6416, 12475), (7984, 10025), (8020, 9980)]