19128820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 42940800

約数和(自身を除く): 23811980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 380, 709, 710, 1349, 1418, 1420, 2698, 2836, 3545, 5396, 6745, 7090, 13471, 13490, 14180, 26942, 26980, 50339, 53884, 67355, 100678, 134710, 201356, 251695, 269420, 503390, 956441, 1006780, 1912882, 3825764, 4782205, 9564410, 19128820]

約数ペア:

[(1, 19128820), (2, 9564410), (4, 4782205), (5, 3825764), (10, 1912882), (19, 1006780), (20, 956441), (38, 503390), (71, 269420), (76, 251695), (95, 201356), (142, 134710), (190, 100678), (284, 67355), (355, 53884), (380, 50339), (709, 26980), (710, 26942), (1349, 14180), (1418, 13490), (1420, 13471), (2698, 7090), (2836, 6745), (3545, 5396)]