19311358

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:624

約数の個数: 24

約数和(自身を含む): 32079600

約数和(自身を除く): 12768242

約数列:

[1, 2, 11, 22, 121, 199, 242, 398, 401, 802, 2189, 4378, 4411, 8822, 24079, 48158, 48521, 79799, 97042, 159598, 877789, 1755578, 9655679, 19311358]

約数ペア:

[(1, 19311358), (2, 9655679), (11, 1755578), (22, 877789), (121, 159598), (199, 97042), (242, 79799), (398, 48521), (401, 48158), (802, 24079), (2189, 8822), (4378, 4411)]