18397720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41813}}^1$

素因数の和:41835

約数の個数: 32

約数和(自身を含む): 45159120

約数和(自身を除く): 26761400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 41813, 83626, 167252, 209065, 334504, 418130, 459943, 836260, 919886, 1672520, 1839772, 2299715, 3679544, 4599430, 9198860, 18397720]

約数ペア:

[(1, 18397720), (2, 9198860), (4, 4599430), (5, 3679544), (8, 2299715), (10, 1839772), (11, 1672520), (20, 919886), (22, 836260), (40, 459943), (44, 418130), (55, 334504), (88, 209065), (110, 167252), (220, 83626), (440, 41813)]