1812963920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{371509}}^1$

素因数の和:371583

約数の個数: 40

約数和(自身を含む): 4284253320

約数和(自身を除く): 2471289400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 371509, 743018, 1486036, 1857545, 2972072, 3715090, 5944144, 7430180, 14860360, 22662049, 29720720, 45324098, 90648196, 113310245, 181296392, 226620490, 362592784, 453240980, 906481960, 1812963920]

約数ペア:

[(1, 1812963920), (2, 906481960), (4, 453240980), (5, 362592784), (8, 226620490), (10, 181296392), (16, 113310245), (20, 90648196), (40, 45324098), (61, 29720720), (80, 22662049), (122, 14860360), (244, 7430180), (305, 5944144), (488, 3715090), (610, 2972072), (976, 1857545), (1220, 1486036), (2440, 743018), (4880, 371509)]