2784400

素因数分解:

$2^4\times 5^2\times {\mathrm{6961}}^1$

素因数の和:6979

約数の個数: 30

約数和(自身を含む): 6690482

約数和(自身を除く): 3906082

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 6961, 13922, 27844, 34805, 55688, 69610, 111376, 139220, 174025, 278440, 348050, 556880, 696100, 1392200, 2784400]

約数ペア:

[(1, 2784400), (2, 1392200), (4, 696100), (5, 556880), (8, 348050), (10, 278440), (16, 174025), (20, 139220), (25, 111376), (40, 69610), (50, 55688), (80, 34805), (100, 27844), (200, 13922), (400, 6961)]