1961980

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{373}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 4146912

約数和(自身を除く): 2184932

約数列:

[1, 2, 4, 5, 10, 20, 263, 373, 526, 746, 1052, 1315, 1492, 1865, 2630, 3730, 5260, 7460, 98099, 196198, 392396, 490495, 980990, 1961980]

約数ペア:

[(1, 1961980), (2, 980990), (4, 490495), (5, 392396), (10, 196198), (20, 98099), (263, 7460), (373, 5260), (526, 3730), (746, 2630), (1052, 1865), (1315, 1492)]