20479600

素因数分解:

$2^4\times 5^2\times {\mathrm{51199}}^1$

素因数の和:51217

約数の個数: 30

約数和(自身を含む): 49203200

約数和(自身を除く): 28723600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51199, 102398, 204796, 255995, 409592, 511990, 819184, 1023980, 1279975, 2047960, 2559950, 4095920, 5119900, 10239800, 20479600]

約数ペア:

[(1, 20479600), (2, 10239800), (4, 5119900), (5, 4095920), (8, 2559950), (10, 2047960), (16, 1279975), (20, 1023980), (25, 819184), (40, 511990), (50, 409592), (80, 255995), (100, 204796), (200, 102398), (400, 51199)]