201643820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205759}}^1$

素因数の和:205782

約数の個数: 36

約数和(自身を含む): 492589440

約数和(自身を除く): 290945620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205759, 411518, 823036, 1028795, 1440313, 2057590, 2880626, 4115180, 5761252, 7201565, 10082191, 14403130, 20164382, 28806260, 40328764, 50410955, 100821910, 201643820]

約数ペア:

[(1, 201643820), (2, 100821910), (4, 50410955), (5, 40328764), (7, 28806260), (10, 20164382), (14, 14403130), (20, 10082191), (28, 7201565), (35, 5761252), (49, 4115180), (70, 2880626), (98, 2057590), (140, 1440313), (196, 1028795), (245, 823036), (490, 411518), (980, 205759)]