198879406

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{45427}}^1$

素因数の和:45639

約数の個数: 16

約数和(自身を含む): 327081600

約数和(自身を除く): 128202194

約数列:

[1, 2, 11, 22, 199, 398, 2189, 4378, 45427, 90854, 499697, 999394, 9039973, 18079946, 99439703, 198879406]

約数ペア:

[(1, 198879406), (2, 99439703), (11, 18079946), (22, 9039973), (199, 999394), (398, 499697), (2189, 90854), (4378, 45427)]