19923920

素因数分解:

$2^4\times 5^1\times {\mathrm{271}}^1\times {\mathrm{919}}^1$

素因数の和:1203

約数の個数: 40

約数和(自身を含む): 46544640

約数和(自身を除く): 26620720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 919, 1084, 1355, 1838, 2168, 2710, 3676, 4336, 4595, 5420, 7352, 9190, 10840, 14704, 18380, 21680, 36760, 73520, 249049, 498098, 996196, 1245245, 1992392, 2490490, 3984784, 4980980, 9961960, 19923920]

約数ペア:

[(1, 19923920), (2, 9961960), (4, 4980980), (5, 3984784), (8, 2490490), (10, 1992392), (16, 1245245), (20, 996196), (40, 498098), (80, 249049), (271, 73520), (542, 36760), (919, 21680), (1084, 18380), (1355, 14704), (1838, 10840), (2168, 9190), (2710, 7352), (3676, 5420), (4336, 4595)]